3488c1

Part Number 143488-01 Rev. C (08/08)

Bently Nevada™ Asset Condition Monitoring

Operation and Maintenance Manual

3500/40M Proximitor® Monitor Module

3500/42M Proximitor®/Seismic Monitor Module Operation and Maintenance Manual

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Copyright 1999. Bently Nevada LLC.

All rights reserved.

The information contained in this document is subject to change without notice. The following are trademarks of General Electric Company in the United States and other countries: Bently Nevada, Proximitor, Keyphasor, Seismoprobe, REBAM, MicroPROX The following are trademarks of the legal entities cited: 3M and Velostat are trademarks of 3M Company. Modbus is a trademark of Modbus-IDA.

Contact Information The following contact information is provided for those times when you cannot contact your local representative:

Mailing Address 1631 Bently Parkway South Minden, Nevada USA 89423 USA

Telephone 1.775.782.3611 1.800.227.5514

Fax 1.775.215.2873 Internet www.ge-energy.com/bently

http://www.ge-energy.com/bently

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Additional Information

Notice: This manual does not contain all the information required to operate and maintain the 3500/42M Monitor. Refer to the following manuals for other required information. 3500 Monitoring System Rack Installation and Maintenance Manual (129766-01) • general description of a standard system • general description of a Triple Modular redundant (TMR) system • instructions for installing the removing the module from a 3500 rack • drawings for all cables used in the 3500 Monitoring System

3500 Monitoring System Rack Configuration and Utilities Guide (129777-01) • guidelines for using the 3500 Rack Configuration software for setting the operating

parameters of the module • Guidelines for using the 3500 test utilities to verify that the input and output terminals

on the module are operating properly 3500 Monitoring system Computer Hardware and Software Manual (128158-01) • instructions for connecting the rack to 3500 host computer • procedures for verifying communication • procedures for installing software • guidelines for using Data Acquisition / DDE Server and Operator Display Software • procedures and diagrams for setting up network and remote communications 3500 Field Wiring Diagram Package (130432-01) • diagrams that show how to hook up a particular transducer • lists of recommended wiring


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Product Disposal Statement Customers and third parties, who are not member states of the European Union, who are in control of the product at the end of its life or at the end of its use, are solely responsible for the proper disposal of the product. No person, firm, corporation, association or agency that is in control of product shall dispose of it in a manner that is in violation of any applicable federal, state, local or international law. Bently Nevada LLC is not responsible for the disposal of the product at the end of its life or at the end of its use.

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Contents

1. Receiving and Handling Instructions .............................................. 1 1.1 Receiving Inspection ................................................................................................................... 1 1.2 Handling and Storage Considerations................................................................................ 1

2. General Information ........................................................................... 3 2.1 Introduction .................................................................................................................................... 3 2.2 Views of the Front Panel and I/O Modules........................................................................ 4 2.3 Triple Modular Redundant Description............................................................................... 4 2.4 Available Data................................................................................................................................ 5

2.4.1 Monitor Statuses........................................................................................................................... 5 2.4.2 Channel Statuses.......................................................................................................................... 8 2.4.3 Proportional Values ...................................................................................................................10

2.5 LED Descriptions.........................................................................................................................10 2.6 Monitor Versions.........................................................................................................................10

3. Monitor Configuration...................................................................... 13 3.1 Introduction ..................................................................................................................................13 3.2 Configuration Options ..............................................................................................................13

3.2.1 Reference Information .............................................................................................................13 3.2.2 Slot Input/Output Module Type............................................................................................14 3.2.3 Channel Pair 1 and 2 and Channel Pair 3 and 4...........................................................15 3.2.4 Keyphasor® Signal Association............................................................................................15

3.3 Software Switches .....................................................................................................................16 3.3.1 Module Switches.........................................................................................................................16 3.3.2 Channel Switches.......................................................................................................................17

4. Input/Output Module Descriptions................................................ 19 4.1 Introduction ..................................................................................................................................19 4.2 Proximitor I/O Modules ............................................................................................................20 4.3 Internal Barrier I/O Modules ..................................................................................................20 4.4 TMR I/O Module ...........................................................................................................................22 4.5 Wiring Euro Style Connectors ...............................................................................................22 4.6 External Termination Blocks..................................................................................................23

4.6.1 External Termination Blocks for Standard Applications ...........................................24 4.6.2 External Termination Blocks for TMR Applications......................................................24

4.7 Cable Pinouts................................................................................................................................26

5. Monitor Verification.......................................................................... 27


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5.1 Introduction ..................................................................................................................................27 5.2 Choosing a Maintenance Interval.......................................................................................27 5.3 Typical Verification Test Setup .............................................................................................27 5.4 Using the 3500 Rack Configuration Software ...............................................................29 5.5 Adjusting the Scale Factor and Zero Position................................................................31

5.5.1 Adjusting the Scale Factor .....................................................................................................31 5.5.2 Zero Position Adjustment Description...............................................................................32 5.5.3 Adjusting the Zero Position ....................................................................................................34

5.6 If a Channel Fails a Verification Test..................................................................................34 5.7 Performing Firmware Upgrades..........................................................................................35

6. Troubleshooting.................................................................................37 6.1 Introduction ..................................................................................................................................37 6.2 Self-Test ..........................................................................................................................................37 6.3 LED Fault Conditions .................................................................................................................38 6.4 System Event List Messages..................................................................................................38

6.4.1 Example of a System Event List Message .......................................................................38 6.4.2 List of Messages..........................................................................................................................39

6.5 Alarm Event List Messages ....................................................................................................54 6.6 Gateway Status Bits ..................................................................................................................54

7. Radial Vibration General Information............................................57

8. Radial Vibration Configuration .......................................................59 8.1 Introduction ..................................................................................................................................59 8.2 Configuration Considerations...............................................................................................59 8.3 Configuration Options ..............................................................................................................60

8.3.1 General Parameters and Buttons .......................................................................................61 8.3.2 Reference Information .............................................................................................................62 8.3.3 Enable..............................................................................................................................................62 8.3.4 Delay ................................................................................................................................................65 8.3.5 Transducer Selection ................................................................................................................66 8.3.6 Alarm Mode...................................................................................................................................68 8.3.7 Transducer Orientation............................................................................................................69 8.3.8 Barriers............................................................................................................................................70

8.4 Alarm Setpoints...........................................................................................................................70 8.4.1 Available Setpoints ....................................................................................................................71 8.4.2 Alarm Hysteresis.........................................................................................................................72

9. Radial Vibration Verification............................................................73 9.1 Introduction ..................................................................................................................................73 9.2 Test Equipment and Software Setup.................................................................................73

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9.2.1 Test Equipment Setup ..............................................................................................................74 9.2.2 Verification Screen Setup........................................................................................................75

9.3 Test Alarms....................................................................................................................................76 9.3.1 Direct................................................................................................................................................76 9.3.2 Gap....................................................................................................................................................77 9.3.3 1X Amplitude (1X Ampl)............................................................................................................78 9.3.4 1X Phase.........................................................................................................................................80 9.3.5 2X Amplitude (2X Ampl)............................................................................................................81 9.3.6 2X Phase.........................................................................................................................................82 9.3.7 Not 1X Amplitude (Not 1X) ......................................................................................................84 9.3.8 Smax Amplitude.............................................................................................................................85

9.4 Verify Channel Values...............................................................................................................86 9.4.1 Direct................................................................................................................................................87 9.4.2 Gap....................................................................................................................................................88 9.4.3 1X Amplitude (1X Ampl)............................................................................................................91 9.4.4 1X Phase.........................................................................................................................................92 9.4.5 2X Amplitude (2X Ampl)............................................................................................................94 9.4.6 2X Phase.........................................................................................................................................96 9.4.7 Not 1X Amplitude........................................................................................................................98 9.4.8 Smax Amplitude..........................................................................................................................100 9.4.9 Test OK Limits............................................................................................................................101

10. Thrust Position General Information........................................... 105

11. Thrust Position Configuration ...................................................... 107 11.1 Introduction ...............................................................................................................................107 11.2 Configuration Considerations............................................................................................107 11.3 Configuration Options ...........................................................................................................108

11.3.1 General Parameters and Buttons ....................................................................................108 11.3.2 Reference Information .......................................................................................................... 109 11.3.3 Enable...........................................................................................................................................110 11.3.4 OK Mode ......................................................................................................................................111 11.3.5 Delay .............................................................................................................................................111 11.3.6 Transducer Selection .............................................................................................................112 11.3.7 Alarm Mode................................................................................................................................115 11.3.8 Barriers.........................................................................................................................................116

11.4 Alarm Setpoints........................................................................................................................116 11.4.1 Overview......................................................................................................................................116 11.4.2 Available Setpoints .................................................................................................................117

12. Differential Expansion General Information.............................. 119


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13. Differential Expansion Configuration ......................................... 121 13.1 Introduction ...............................................................................................................................121 13.2 Configuration Considerations............................................................................................121 13.3 Configuration Options ...........................................................................................................121

13.3.1 General Parameters and Buttons ....................................................................................122 13.3.2 Reference Information .......................................................................................................... 123 13.3.3 Enable...........................................................................................................................................123 13.3.4 OK Mode ......................................................................................................................................124 13.3.5 Timed OK Channel Defeat ...................................................................................................125 13.3.6 Delay .............................................................................................................................................125 13.3.7 Transducer Selection .............................................................................................................125 13.3.8 Alarm Mode................................................................................................................................127 13.3.9 Upscale Direction ....................................................................................................................128

13.4 Alarm Setpoints........................................................................................................................128 13.4.1 Available Setpoints .................................................................................................................129 13.4.2 Alarm Hysteresis......................................................................................................................129

14. Thrust Position and Differential Expansion Verification ......... 131 14.1 Introduction ...............................................................................................................................131 14.2 Test Equipment and Software Setup..............................................................................131

14.2.1 Required Test Equipment.....................................................................................................131 14.2.2 Test Equipment Setup ........................................................................................................... 132 14.2.3 Verification Screen Setup.....................................................................................................132

14.3 Test Alarms.................................................................................................................................133 14.3.1 Direct.............................................................................................................................................133 14.3.2 Gap.................................................................................................................................................134

14.4 Verify Channel Values............................................................................................................135 14.4.1 Direct.............................................................................................................................................135 14.4.2 Gap.................................................................................................................................................137

14.5 Test OK Limits............................................................................................................................138

15. Eccentricity General Information ................................................ 143

16. Eccentricity Configuration ............................................................ 145 16.1 Introduction ...............................................................................................................................145 16.2 Configuration Considerations............................................................................................145 16.3 Configuration Options ...........................................................................................................145

16.3.1 General Parameters and Buttons ....................................................................................146 16.3.2 Reference Information .......................................................................................................... 147 16.3.3 Enable...........................................................................................................................................147 16.3.4 Delay .............................................................................................................................................149

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16.3.5 Instantaneous Crossover.....................................................................................................150 16.3.6 Direct Channel Above 600 RPM ........................................................................................150 16.3.7 Transducer Selection .............................................................................................................150 16.3.8 Alarm Mode................................................................................................................................153 16.3.9 Barriers.........................................................................................................................................154 16.3.10 OK Mode .................................................................................................................................154 16.3.11 Timed OK Channel Defeat ..............................................................................................154

16.4 Alarm Setpoints........................................................................................................................154 16.4.1 Available Setpoints .................................................................................................................155 16.4.2 Alarm Hysteresis......................................................................................................................157

17. Eccentricity Verification................................................................. 159 17.1 Introduction ...............................................................................................................................159 17.2 Test Equipment and Software Setup..............................................................................159

17.2.1 Test Equipment Setup ........................................................................................................... 160 17.2.2 Verification Screen Setup.....................................................................................................161

17.3 Test Alarms.................................................................................................................................161 17.3.1 Peak-to-Peak.............................................................................................................................161 17.3.2 Gap.................................................................................................................................................162 17.3.3 Direct.............................................................................................................................................164

17.4 Verify Channel Values............................................................................................................165 17.4.1 Peak-to-Peak.............................................................................................................................165 17.4.2 Gap.................................................................................................................................................167 17.4.3 Direct.............................................................................................................................................167

17.5 Test OK Limits............................................................................................................................169

18. REBAM® Channel General Information ....................................... 173

19. REBAM Channel Configuration ..................................................... 175 19.1 Introduction ...............................................................................................................................175 19.2 Configuration Considerations............................................................................................175 19.3 General Options .......................................................................................................................175

19.3.1 Reference Information .......................................................................................................... 176 19.3.2 General Parameters and Buttons ....................................................................................177

19.4 Channel Configuration Tab.................................................................................................177 19.4.1 Trip Multiply................................................................................................................................178 19.4.2 Transducer Jumper Status (on I/O Module).................................................................178 19.4.3 Enable...........................................................................................................................................178 19.4.4 Delay .............................................................................................................................................180 19.4.5 Transducer Selection .............................................................................................................180 19.4.6 Alarm Mode................................................................................................................................182


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19.4.7 Transducer Orientation......................................................................................................... 182 19.4.8 Barriers.........................................................................................................................................183

19.5 Bearing Configuration Tab..................................................................................................183 19.5.1 Shaft Speed................................................................................................................................184 19.5.2 Number of Elements ..............................................................................................................184 19.5.3 Bearing Diameter (D)..............................................................................................................185 19.5.4 Rolling Element Diameter (d) ..............................................................................................185 19.5.5 Contact Angle (α) .....................................................................................................................185 19.5.6 Estimation Factor ....................................................................................................................185

19.6 Filter Configuration Tab........................................................................................................185 19.6.1 Filter Units...................................................................................................................................186 19.6.2 Bearing Frequencies ..............................................................................................................186 19.6.3 Filters.............................................................................................................................................187 19.6.4 Stepping/Tracking Enabled.................................................................................................187

19.7 Filter Summary Tab ................................................................................................................187 19.8 Alarm Setpoints........................................................................................................................188

19.8.1 Available Setpoints .................................................................................................................189 19.8.2 Alarm Hysteresis......................................................................................................................191

20. REBAM Channel Verification ......................................................... 193 20.1 Introduction ...............................................................................................................................193 20.2 Test Equipment and Software Setup..............................................................................193

20.2.1 Test Equipment Setup ........................................................................................................... 193 20.2.2 Verification Screen Setup.....................................................................................................195

20.3 Test Alarms.................................................................................................................................195 20.3.1 Spike ..............................................................................................................................................196 20.3.2 Element ........................................................................................................................................197 20.3.3 Rotor..............................................................................................................................................198 20.3.4 Direct.............................................................................................................................................199 20.3.5 Gap.................................................................................................................................................200 20.3.6 1X Amplitude (1X Ampl)......................................................................................................... 201 20.3.7 1X Phase......................................................................................................................................203

20.4 Verify Channel Values............................................................................................................204 20.4.1 Spike ..............................................................................................................................................204 20.4.2 Element ........................................................................................................................................206 20.4.3 Rotor..............................................................................................................................................207 20.4.4 Direct.............................................................................................................................................209 20.4.5 Gap.................................................................................................................................................210 20.4.6 1X Amplitude (1X Ampl)......................................................................................................... 211 20.4.7 1X Phase......................................................................................................................................213

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20.5 Test OK Limits............................................................................................................................215

21. Specifications................................................................................... 217 21.1 Inputs ............................................................................................................................................217

21.1.1 Signal ............................................................................................................................................217 21.1.2 Input Impedance .....................................................................................................................217 21.1.3 Power Consumption...............................................................................................................217 21.1.4 Sensitivity ....................................................................................................................................217

21.2 Outputs ........................................................................................................................................218 21.2.1 Front Panel LEDs......................................................................................................................218 21.2.2 Buffered Transducer Outputs ............................................................................................218 21.2.3 Transducer Power Supply....................................................................................................218

21.3 Signal Conditioning.................................................................................................................218 21.3.1 Radial Vibration........................................................................................................................218 21.3.2 Thrust and Differential Expansion ...................................................................................219 21.3.3 Eccentricity.................................................................................................................................220 21.3.4 REBAM Channel........................................................................................................................220

21.4 Alarms...........................................................................................................................................225 21.5 Static Values ..............................................................................................................................226 21.6 Proximitor Sensor Barrier Parameters...........................................................................226 21.7 Environmental Limits .............................................................................................................227 21.8 CE Mark Directives ..................................................................................................................228

21.8.1 EMC Directives ..........................................................................................................................228 21.8.2 CE Mark Low Voltage Directives .......................................................................................229

21.9 Hazardous Areas Approval (CSA/NRTL/C) ....................................................................229 21.10 Physical ........................................................................................................................................229

22. Ordering Information ..................................................................... 231 22.1 Ordering Considerations ......................................................................................................231

22.1.1 General.........................................................................................................................................231 22.1.2 Internal Barrier I/O Module .................................................................................................231 22.1.3 REBAM Channel........................................................................................................................231

22.2 List of Options and Part Numbers....................................................................................232 22.2.1 Proximitor Seismic Monitor .................................................................................................232 22.2.2 3500 Transducer (XDCR) Signal to External Termination (ET) Block Cable.....232 22.2.3 External Termination Blocks...............................................................................................232 22.2.4 Spares...........................................................................................................................................233

Section 1 - Receiving and Handling Instructions

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1. Receiving and Handling Instructions 1.1 Receiving Inspection

Visually inspect the module for obvious shipping damage. If you detect shipping damage, file a claim with the carrier and submit a copy to Bently Nevada LLC.

1.2 Handling and Storage Considerations Circuit boards contain devices that are susceptible to damage when exposed to electrostatic charges. Damage caused by obvious mishandling of the board will void the warranty. To avoid damage, observe the following precautions in the order given.

Application Advisory

Machinery protection may be lost when you remove this module

from the rack.

• Do not discharge static electricity onto the circuit board.

• Avoid tools or procedures that would subject the circuit board to static damage. Some possible causes include ungrounded soldering irons, nonconductive plastics, and similar materials.

• Personnel must use a suitable grounding strap (such as 3M® Velostat® No. 2060 ground strap) to ground themselves before handling or maintaining a printed circuit board.

• Transport and store circuit boards in electrically conductive bags or foil.

• Use extra caution during dry weather. Relative humidity less than 30% tends to multiply the accumulation of static charges on any surface.

Section 2 - General Information

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2. General Information 2.1 Introduction

The 3500/40M Proximitor Monitor is a 4-channel monitor that accepts input from proximity transducers, conditions the signal to make various vibration and position measurements, and compares the conditioned signals with user-programmable alarms. You can use the 3500 Rack Configuration Software to program each channel of the 3500/40M to perform any of the following functions:

• Radial Vibration

• Thrust Position

• Eccentricity

• Differential Expansion

• REBAM

NOTE

You program the monitor channels in pairs. The monitor channels can perform up to 2 of

these functions at a time. Channels 1 and 2 can perform one function, while channels 3 and 4

perform another (or the same) function.

The primary purposes of the 3500/40M monitor are:

1. To continuously compare monitored parameters against configured alarm setpoints to drive alarms and provide machine protection.

2. To provide essential machine information for both operations and maintenance personnel.

Each channel, depending on configuration, typically conditions its input signal into various parameters called “proportional values”. You can configure Alert setpoints for each active proportional value and Danger setpoints for any 2 of the active proportional values.

The 3500/42M is shipped from the factory in an unconfigured state. You can install the 3500/42M into a 3500 rack and configure the module as needed to


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perform the monitoring function you require. This lets you stock a single monitor for use as a spare for many different applications.

2.2 Views of the Front Panel and I/O Modules

1. Main module front view 2. Status LEDs 3. Buffered transducer outputs 4. I/O module rear views 5. Barrier I/O module with Internal Terminations 6. I/O module with Internal Terminations 7. I/O module with External Terminations 8. TMR I/O module with External Terminations

Figure 2-1: Front and Rear Views of the Proximitor Module

2.3 Triple Modular Redundant Description In a TMR configuration, you must install 3500/40M monitors and I/O modules adjacent to each other in groups of 3. In this configuration, the monitors employ 2 types of voting to ensure accurate operation and to avoid single-point failures.


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The first level of voting occurs on the TMR Relay Module. This voting uses a 2-out-of-3 method to compare the selected alarm outputs for the 3 monitors. 2 monitors must agree before the relay module drives the relay. Refer to the 3500/32 & 34 Relay Module Operation and Maintenance Manual (part number 129771-01) for more information on this voting.

The second type of voting is referred to as "Comparison" voting. This type of voting compares the proportional value outputs of each monitor in the group with each other. If the output of a monitor differs from the output of the other monitors in the group by a specified amount, that monitor will add an entry to the System Event list. You configure comparison voting by setting Comparison and % Comparison in the 3500 Rack Configuration Software.

Comparison: The enabled proportional value of the TMR monitor group that the TMR group uses to determine by how much the values of the 3 monitors can differ before a monitor adds an entry to the System Event List.

% Comparison: The maximum difference in percent between the middle value of the 3 monitors in a TMR group and the individual values of each monitor.

2 types of input configurations are available for TMR applications: bussed and discrete.

1) Bussed configuration uses the signal from a single non-redundant transducer and provides that signal to all modules in the TMR group through a single 3500 Bussed External Termination Block.

2) Discrete configuration requires 3 redundant transducers at each measurement location on the machine. The input from each transducer connects to separate 3500 external termination blocks or directly to the I/O module with internal terminations.

2.4 Available Data The Proximitor Monitor returns specific proportional values that depend upon the type of channel that is configured. This monitor also returns both monitor and channel statuses which are common to all types of channels.

2.4.1 Monitor Statuses

This section describes the monitor statuses that the monitor provides.


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Table 2-1 summarizes where you can find the monitor statuses.


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Table 2-1: Location of Monitor Statuses

Statuses Communication Gateway Module

Rack Configuration Software

Monitor Not OK X X

Monitor Alert/Alarm 1 X X

Monitor Danger/Alarm 2 X X

Monitor Bypass X

Monitor Configuration Fault X

Monitor Special Alarm Inhibit X

2.4.1.1 Not OK Status

This indicates whether the monitor is functioning correctly. The monitor returns a Not OK status under any of the following conditions:

• Module Hardware Failure

• Node Voltage Failure

• Configuration Failure

• Transducer Failure

• Slot ID Failure

• Channel not OK

If the Monitor OK status goes Not OK, then the system OK Relay on the Rack Interface I/O Module will be driven Not OK.

2.4.1.2 Alert/Alarm 1 Status

This indicates whether the monitor has entered Alert/Alarm 1. A monitor will enter the Alert/Alarm 1 state when any proportional value provided by the monitor exceeds its configured Alert/Alarm 1 setpoint.

2.4.1.3 Danger/Alarm 2 Status

This indicates whether the monitor has entered Danger/Alarm 2. A monitor will enter the Danger/Alarm 2 state when any proportional value provided by the monitor exceeds its configured Danger/Alarm 2 setpoint.

2.4.1.4 Bypass Status

This indicates when the monitor has bypassed alarming for 1 or more proportional values at a channel. A condition that sets the channel bypass status will also set this monitor bypass status.


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2.4.1.5 Configuration Fault Status

This indicates whether the monitor configuration is valid.

2.4.1.6 Special Alarm Inhibit Status

This indicates whether all the non-primary Alert/Alarm 1 alarms in the associated monitor channel are inhibited. The Channel Special Alarm Inhibit function is active when:

• The Alarm Inhibit contact (INHB/RET) on the I/O Module is closed (active).

• A Channel Special Alarm Inhibit software switch is enabled.

2.4.2 Channel Statuses

This section describes the channel statuses that the monitor provides. Table 2-2 summarizes where you can find the channel statuses.

Table 2-2: Location of Channel Statuses

Statuses Communication Gateway Module

Rack Configuration Software

Operator Display Software

Channel OK X X X

Channel Alert/Alarm 1 X X X

Channel Danger/Alarm 2 X X X

Channel Bypass X X X

Channel Special Alarm Inhibit X X X

Channel Off X X

Channel Not Monitoring X

Channel Signal Path Not OK X

2.4.2.1 OK Status

This indicates that the monitor has detected no fault with the associated monitor channel. There are 2 types of channel OK checking:

• Transducer Input Voltage

• Transducer Supply Voltage.

The monitor will deactivate a channel OK status if either of these 2 OK types goes Not OK.

2.4.2.2 Alert/Alarm 1 Status

This indicates whether the associated monitor channel has entered Alert/Alarm 1. A channel will enter the Alert/Alarm 1 state when any proportional value provided by the channel exceeds its configured Alert/Alarm 1 setpoint.


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2.4.2.3 Danger/Alarm 2 Status

This indicates whether the associated monitor channel has entered Danger/Alarm 2. A channel will enter the Danger/Alarm 2 state when any proportional value provided by the channel exceeds its configured Danger/Alarm 2 setpoint.

2.4.2.4 Bypass Status

This indicates that the channel has bypassed alarming for 1 or more of its proportional values. The following conditions may cause a channel bypass status:

• A transducer is Not OK, and the channel is configured for Timed OK Channel Defeat.

• The Keyphasor® signal with which the channel is associated has gone invalid, defeating all proportional values that relate to the Keyphasor signal (for example 1X Amplitude, 1X Phase, Not 1X, etc.) and bypassing their associated alarms.

• The monitor has detected a serious internal fault.

• A software switch is bypassing any channel alarming function.

• The Special Alarm Inhibit is active and preventing the monitor from processing enabled alarms.

2.4.2.5 Special Alarm Inhibit Status

This indicates whether all the non-primary Alert/Alarm 1 alarms in the associated monitor channel are inhibited. The Channel Special Alarm Inhibit function is active when:

• The Alarm Inhibit contact (INHB/RET) on the I/O Module is closed (active).

• A Channel Special Alarm Inhibit software switch is enabled.

2.4.2.6 Off Status

This indicates whether the channel has been turned off. You may use the 3500 Rack Configuration Software to turn off the monitor channels.

2.4.2.7 Channel Not Monitoring Status

This indicates that a configuration error, I/O error, or hardware problem has disabled alarming for this channel. Check the system events list for more information.


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2.4.2.8 Channel Signal Path Not OK

This indicates that the monitor cannot receive a valid signal for this channel due to a transducer Not OK or a hardware problem. Check the system events list for more information.

2.4.3 Proportional Values

Proportional values are vibration measurements that applications use to monitor the machine. The number and type of proportional values varies by channel type. Refer to the section on the applicable channel type for information about the proportional values for each channel type.

2.5 LED Descriptions The LEDs on the front panel of the Proximitor/Seismic Monitor, shown in Figure 2-2, indicate the operating status of the module. Refer to the channel type configuration sections in this manual for all of the available LED conditions.

1. OK LED: Indicates that the Proximitor/Seismic monitor and the I/O module are operating correctly. 2. TX/RX LED: Flashes at the rate that messages are received and transmitted. 3. Bypass LED: Indicates that some of the monitor functions are temporarily suppressed.

Figure 2-2: 3500/40M Front Panel LEDs

2.6 Monitor Versions The 3500/40M monitor is an enhanced replacement of the original 3500/40 monitor. The “M” designation refers to the monitor’s enhanced machine management capabilities. The monitor supports current and future Bently Nevada™ machine management systems. You can use the 3500/42M in the same applications and as a direct replacement for the 3500/42. You can distinguish the 3500/42M from the original by the model designation on the front panel, as shown in Figure 2-3.


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1. Model number

Figure 2-3: Location of 3500/40M Model Designation

Section 3 - Monitor Configuration

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3. Monitor Configuration 3.1 Introduction

This section describes how to use the 3500 Rack Configuration Software to configure the 3500/40M Proximitor Monitor. It also describes any configuration restrictions associated with this module. Refer to the 3500 Monitoring System Rack Configuration and Utilities Guide (part number 129777-01) and the 3500 Rack Configuration Software for the details on how to operate the software.

3.2 Configuration Options

Figure 3-1: 3500/40M Configuration Screen

3.2.1 Reference Information

These fields contain information that indicates which module you are configuring.

Slot

This value indicates the slot monitoring position (2 through 15) of the monitor in the 3500 Rack.


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Rack Type

This value indicates the type of Rack Interface Module (Standard or TMR) that is installed in the rack.

Configuration ID

This information field displays an optional identifier of up to 6 characters, which, if present, was entered upon last configuration download to the module.

3.2.2 Slot Input/Output Module Type

The I/O field lets you identify the type of I/O Module that is attached to the monitor. The option that you select must agree with the type of installed I/O module.

3.2.2.1 Discrete I/O

Use Discrete I/O when each monitor channel connects to its own transducer. This applies to both standard and TMR installations.

Prox/Seismic I/O Module (Internal Termination)

The transducer field wiring connects directly to the I/O module.

Prox/Seismic I/O Module (External Termination)

The transducer field wiring connects to an external termination block, which connects to the I/O module through a 25-pin cable. The recorder field wiring connects to an external termination block, which connects to the I/O module through a 9-pin cable.

Barrier Proximitor I/O

The transducer field wiring connects directly to the Proximitor Monitor Internal Barrier I/O Module. Note that if you select the Prox/Accel Internal Barrier I/O option then the software will disable certain transducer type options.

3.2.2.2 Bussed I/O

Bussed I/O busses 1 transducer input signal to 3 identical adjacent monitors and 3 TMR I/O Modules. Use this option when your application does not require redundant transducers and field wiring.

TMR I/O Proximitor I/O

This configuration connects a single set of 4 transducers to 3 identical adjacent monitors. Each transducer connects to a Bussed External Termination Block, which in turn connects to the Proximitor TMR I/O Modules through 3 25-pin cables. The recorder field wiring connects to an external


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termination block, which connects to the Proximitor/Seismic TMR I/O Module through a 9-pin cable.

3.2.3 Channel Pair 1 and 2 and Channel Pair 3 and 4

The fields within these boxes apply to both channels of the channel pair.

Channel Pair Type

This determines the type of monitoring which the channel pair is to perform. The monitor provides the following Channel Pair types:

• Radial Vibration • Thrust Position • Differential Expansion • Eccentricity • REBAM

3.2.4 Keyphasor® Signal Association

No Keyphasor

You can use this option when a Keyphasor signal is not available. If you mark this field then the only available data will be Direct and Gap. Software will automatically mark this field for channel pairs, such as Thrust and Differential Expansion, that do not require a Keyphasor transducer.

Primary

Primary specifies the Keyphasor channel that the monitor will normally use for measurement. If you mark this Keyphasor transducer as invalid, the backup Keyphasor transducer will provide the shaft reference information.

Backup

Backup specifies the Keyphasor channel that the monitor will use if the primary Keyphasor channel fails. If your application does not have a backup Keyphasor channel, select your primary Keyphasor channel as your backup Keyphasor channel.


For TMR applications, set Channel Pair 1 and 2 as the primary Keyphasor channel and Channel Pair 3 and 4 as the backup

Keyphasor channel.


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Active

This selects whether the functions of the channel will be turned ON ( ) or OFF ( ).

Options

This button displays the configuration options for the selected channel type.

3.3 Software Switches The Proximitor Monitor supports 2 module software switches and 4 channel software switches. These switches let you temporarily bypass or inhibit monitor and channel functions. Set these switches on the Software Switches screen under the Utilities Option on the main screen of the 3500 Rack Configuration Software.

Figure 3-2: 3500/40M Software Switches

No changes will take effect until you press the Set button.

3.3.1 Module Switches

Configuration Mode

This switch allows you to configure the monitor. To configure the monitor, enable () this switch and set the key switch on the front of the Rack Interface Module in the PROGRAM position. When the 3500 Rack Configuration Software downloads a configuration, it will automatically enable and disable this switch. If the software loses its connection to the rack


17

during the configuration process, use this switch to remove the module from Configuration Mode.

Monitor Alarm Bypass

When you enable this switch the monitor does not perform alarming functions but will still provide all proportional values. The system uses the monitor switch number in the Communication Gateway and Display Interface Modules.

Table 3-1: Module Switches

Monitor Switch Number Switch Name

1 Configuration Mode

3 Monitor Alarm Bypass

3.3.2 Channel Switches

Alert Bypass

When you enable this switch, the channel does not perform Alert alarming functions.

Danger Bypass

When you enable this switch, the channel does not perform Danger alarming functions.

Special Alarm Inhibit

When you enable this switch, the channel will inhibit all non-primary Alert alarms.

Bypass

When you enable this switch, the channel provides no alarming functions and supplies no proportional values.

The system uses the channel switch number in the Communication Gateway and Display Interface Modules.

Table 3-2: Channel Switches

Channel Switch Number Switch Name

1 Alert Bypass

2 Danger Bypass

3 Special Alarm Inhibit

4 Bypass

Section 4 - I/O Module Descriptions

19

4. Input/Output Module Descriptions 4.1 Introduction

Input/Output (I/O) Modules receive signals from the transducers and route the signals to the Proximitor/Seismic Monitor. The I/O module supplies power to the transducers and provides a 4 to 20 mA recorder output for each transducer input channel. You can install only 1 I/O module at any one time. You must install the I/O module behind the monitor in a rack mount or panel mount rack, or above the monitor in a Bulkhead rack.

I/O modules can have either internal or external terminations. Internal termination requires that you wire each transducer and recorder directly to the I/O module. External termination lets you simplify the wiring to the I/O modules in a 3500 rack by using a 25-pin cable to route the signals from the 4 transducers and a 9-pin cable to route the signals from the recorders. External termination I/O modules allow you to use External Termination blocks so that you can place the transducer wiring in any convenient location.

The 3500/42M Proximitor/Seismic Monitor is compatible with the following types of I/O modules:

Table 4-1: Compatible I/O Module Types

Internal Termination External Termination External Termination Block

Proximitor I/O module

Barrier Proximitor I/O module

Proximitor I/O module

TMR Proximitor I/O module

Terminal strip connectors

Euro Style connectors

This section describes the connectors, jumpers, and switches for each type of I/O module, lists which cables you should use, and shows the pinouts of the cables. The 3500 Field Wiring Diagram Package (part number 130432-01) shows how to connect transducers and recorders to the I/O module or the external termination block.


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4.2 Proximitor I/O Modules

1. Connection to transducers associated with channel 1 and 2 2. Connection to transducers associated with channel 3 and 4 3. Connect to switches and recorders. Use INHB/RET to inhibit all non-primary Alert/Alarm 1 functions for all 4

channels. Use COM/REC to connect each channel to a recorder. 4. Connect the I/O module to an External Termination block using cable 129525-AXXXX-BXX

Figure 4-1: Internal Termination (Left) and External Termination (Right) Prox/Seismic I/O Modules.

4.3 Internal Barrier I/O Modules The Internal Barrier I/O modules require you to individually connect each transducer to the Barrier I/O module. This module provides 4 channels of intrinsically safe signal conditioning for Proximitor transducers and has 2


21

internally-mounted zener barrier modules, 1 module for each pair of transducer channels. Systems that use internal barrier I/O modules require you to use a 3500 Earthing Module to provide an intrinsically safe earth connection for intrinsically safe applications. Refer to the 3500 Monitoring SystemRack Installation and Maintenance Manual (part number 129766-01) for system requirements when using Internal Barrier I/O Modules.

1. Connection to transducers associated with channel 1 and 2 2. Connection to transducers associated with channel 3 and 4 3. Connect to switches and recorders. Use INHB/RET to inhibit all non-primary Alert/Alarm 1 functions for all 4

channels. Use COM/REC to connect each channel to a recorder.

Figure 4-2: Internal Barrier I/O Modules


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4.4 TMR I/O Module

1. Connect the I/O module to the external termination block using cable 129525-AXXXX-BXX.

Figure 4-3: TMR I/O Module

You use the Proximitor TMR I/O Module in a TMR rack. Applications connect 4 transducers to 3 monitors so that 3 channels (1 channel from each monitor) share each transducer. These applications use 1 external termination block to wire the transducers.

4.5 Wiring Euro Style Connectors To remove a terminal block from its base, loosen the screws attaching the terminal block to the base, grip the block firmly and pull. Do not pull the block out by its wires because this could loosen or damage the wires or connector.


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Figure 4-4: Removing Terminal Block

Refer to the 3500 Field Wiring Diagram Package (part number 130432-01) for the recommended wiring. Do not remove more than 6 mm (0.25 in) of insulation from the wires.

Figure 4-5: Inserting Wire Into Terminal Block

4.6 External Termination Blocks External termination blocks let you position the connectors for transducer wiring at a convenient location and then use multi-pin cables to route the signals to the 3500/42M I/O modules. The different types of termination blocks have different labels and part numbers. Refer to Section 22.2.4, “Spares” for a complete list of the part numbers for all available termination blocks for the 3500/42M.


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Table 4-2: Compatible External Termination Blocks

External Termination Blocks for the Prox/ Seismic I/O Module

External Termination Blocks for the Prox/ Velomitor I/O Module

Proximitor External Termination Block Bussed Proximitor/ Seismic External Termination Block

External termination blocks use either terminal strip or Euro style connectors. The 3500 Field Wiring Diagram Package (part number 130432-01) shows how to connect the transducer wiring to all of these blocks.

4.6.1 External Termination Blocks for Standard Applications

Figure 4-6 shows what the external termination blocks for standard applications look like.

1. Terminals for the transducer field wiring 2. Connector for the cable to an external termination I/O module

Figure 4-6: External Termination Blocks for Standard Applications

4.6.2 External Termination Blocks for TMR Applications

TMR applications with discrete transducers use the Proximitor/Seismic External Termination Block. 1 termination block connects to each 3500/42M monitor in the TMR group. See Section 4.6.1 for the termination blocks for standard installations.

TMR applications that do not use redundant transducers use Bussed External Termination Blocks. These blocks let you route the signal from a single transducer to 3 redundant 3500/42M monitors. Figure 4-7 shows the Bussed External Termination Blocks.


25

1. Terminals for connecting signals from a single transducer 2. Connectors for sending the signal from the same transducer to 3 redundant Prox/Seismic monitors

Figure 4-7: External Termination Blocks for TMR Applications


26

4.7 Cable Pinouts The following diagram shows how to wire the connectors to cables that you must route through conduit.

21

3 3 1. Male 3500 connector, J1 2. Male external termination block connector, J2 3. Shield to connector shell

Figure 4-8: Transducer Signal to External Termination Block Cable (Part Number 129525-XXXX-XX)

Section 5 - Monitor Verification

27

5. Monitor Verification 5.1 Introduction

The boards and components inside 3500 modules cannot be repaired in the field. 3500 rack maintenance consists of testing module channels to verify that they are operating correctly. You should use a spare to replace modules that are not operating correctly.

When performed properly, you may install this module into or remove the module from the rack while power is applied to the rack. Refer to the 3500 Monitoring System Rack Installation and Maintenance Manual (part number 129766-01) for the proper procedure.

Refer to the section of a particular channel type for information on verifying the operation of that channel type.

5.2 Choosing a Maintenance Interval Use the following approach to choose a maintenance interval:

1. Start with an interval of 1 year and then shorten the interval if either of the following conditions apply:

• The monitored machine is classified as critical.

• The 3500 rack operates in a harsh environment, such as in extreme temperature, high humidity, or a corrosive atmosphere.

2. At each interval, use the results of the previous verifications and ISO Procedure 10012-1 to adjust the interval.

5.3 Typical Verification Test Setup Figure 5-1 shows the typical test setup for verifying a Proximitor Monitor. You use the test equipment to simulate the transducer signal and the laptop computer to observe the output from the rack.


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1. Voltmeter 2. Power supply 3. 3500 rack 4. Laptop computer running 3500 Rack Configuration Software

Figure 5-1: Typical Test Setup for Maintenance

You can connect transducers to a 3500 rack in a variety of ways. Depending on the wiring option for the I/O module of your monitor, use one of the methods shown in Figure 5-2 to connect the test equipment to the monitor.

1. Connect test equipment here. 2. Proximitor/Seismic I/O Module 3. External Termination Block with Euro Style connectors 4. External Termination Block with Terminal Strip connectors

Figure 5-2: Test Equipment Connection Options


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5.4 Using the 3500 Rack Configuration Software The laptop computer that is part of the test setup uses the 3500 Rack Configuration Software to display output from the rack and to reset certain operating parameters in the rack. To perform the test procedures in this section you must be familiar with the following operations of the 3500 Rack Configuration Software:

• uploading, downloading, and saving configuration files,

• enabling and disabling channels and alarms,

• bypassing channels and alarms, and

• displaying the Verification screen

The 3500 Rack Configuration and Utilities Guide (part number 129777-01) explains how to perform these operations.

NOTE

Before beginning any Maintenance and/or Troubleshooting Procedures you should save the original rack configuration. The procedures may

require you to change setpoints and other values that you must restore to their original values at the

conclusion of the procedures. At that time you should download the original configuration to the rack.

Figure 5-3 shows how the Verification screen displays output from a 3500 rack:


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1. OK Limit Verification Fields: These fields display output for verifying OK limits. 2. Current Value Verification Fields: The software displays the current proportional in this box. These fields display

output for verifying channel output. 3. Alarm Verification Fields: These fields display output for verifying channel alarms. The software displays alarms

in the bar graph in yellow (Alert/Alarm 1) or red (Danger/Alarm 2) with the word “Alarm” under the current value box.

Figure 5-3: Verification Screen Display

Any channel bar graph value that enters Alert/Alarm 1 or Danger/Alarm 2 will cause the alarm lines in the Channel Status box to indicate an alarm. Any channel that enters alarm will cause the alarm lines in the Module Status box to indicate an alarm.

The bar graph display uses specific lines to indicate the following Setpoints:

• Danger/Alarm 2 Over = Solid red line

• Alert/Alarm 1 Over = Solid yellow line

• Alert/Alarm 1 Under = Dashed yellow line

• Danger/Alarm 2 Under = Dashed red line

Zero Position (Z.P.) Voltage: The Zero Position Voltage is the voltage input that will cause the readings on the bar graph display and current value box to be zero. The software displays the Zero Position Voltage value in the Z.P. Volts box above the bar graph for each channel value.


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5.5 Adjusting the Scale Factor and Zero Position This section shows how to adjust the transducer scale factor and the transducer position, or "zero". You can use the Scale Factor Adjustment to accommodate any deviations in transducer scale factor as measured on the installed transducers. Do not use the procedure to compensate for any errors within the monitor and the I/O module. Replace any monitor does not meet specifications with a spare and return the faulty module to Bently Nevada LLC for repair. You should properly configure and test the newly installed spare module.

Adjusting the scale factor affects the readings of all configured parameters associated with the channel. If you change the scale factor, be sure to use the new value when you calculate inputs for verification of channel values.

Thrust, Eccentricity, and Differential Expansion measurements, as well as Gap measurements you configure to read in displacement units (not volts), use the Zero Position Adjustment. Adjust the zero position after you gap the probe and its target is in the proper position.

Both adjustment procedures use the 3500 Rack Configuration Software to upload the configuration from the rack, change the setting for scale factor or zero position, and then download the new configuration back to the rack. You can use either of the following methods to adjust these settings:

1. Enter a new value in the scale factor box on the transducer screen or the zero position box on the Channel Options screen.

2. Use Adjust to get immediate feedback from the channel on the Adjust screen.

The advantage of using the Adjust screen (Method 2) is that you can use the bar graphs to see the effect of your adjustments on the output signals of the channel. The following procedures show how to use each of these methods.

5.5.1 Adjusting the Scale Factor

1. Use one of the methods in the 3500 Monitoring System Rack Configuration and Utilities Guide (part number 129777-01) to connect the rack configuration computer to the 3500 rack.

2. Run the 3500 Rack Configuration Software.

3. Initiate communication with the rack by first clicking on the Connect option in the File menu and then selecting the connection method that you used in step 1.

4. Click on the Upload option in the File menu to upload the configuration from the rack.

5. Click on the Options button on the 3500 System Configuration screen.


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6. Select the monitor you wish to adjust. The Monitor screen will appear.

7. Select the Options button under the appropriate Channel. The configured Channel Options screen will appear.

8. Select the Customize button in the Transducer Selection box. A Transducer screen will appear.

9. Enter a value for scale factor in the Scale Factor box. If you select Adjust to go to the Adjust screen, be sure to adjust the input to the channel away from the Zero Position so that you can see the results of adjusting the scale factor.

10. Return to the 3500 System Configuration screen by clicking on the OK buttons of the successive screens. The software now adds the new scale factor to the configuration for this channel.

11. Select Download from the File menu to download the new configuration to the appropriate monitor. The new setting for scale factor will take effect when the "Download successful" prompt appears.

5.5.2 Zero Position Adjustment Description

When you adjust the Zero Position voltage, you are defining the transducer voltage that corresponds to the position of the zero indication on a bar graph display (refer to the Figure 5-4).

05

10152025

-5-10-15-20-25

1 1. Thrust position bar graph

Figure 5-4: Bar Graph Zero Position

To maximize the zero adjustment, gap the transducer as closely as possible to the ideal zero position voltage based on the full-scale range and transducer scale factor. For a mid-scale zero, as in Figure 5-4, the ideal gap is the center of the range. Refer to the transducer information of the applicable channel type for the appropriate center voltage

When you increase or decrease the zero position voltage, you are actually mapping the monitor full scale range to a portion of the transducer linear range.


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The zero position voltage adjustment range depends on the full-scale range of the proportional value you are adjusting, the transducer scale factor, and the transducer OK limits. Table 5-1 and Figure 5-5 show how these parameters relate to the zero position voltage range.

Table 5-1: Zero Position Example Parameters

Parameter Name Setting

Channel pair type Thrust Position

Direct Full-scale range -40-0-40 mils

Transducer Type 3300 8mm

Scale Factor 200 mV/mil

Upper OK Limits -19.04 Vdc

Lower OK Limit -1.28 Vdc

010203040

-10-20-30-40

8

-30-40

20

-20-10

100

4030

-18.99V

-2.99V

-1.33V

-17.33V

7

-19.04

-10.99-10.16-9.33

-1.28

2

345

6

1

1. Zero position range 2. Upper OK Limit 3. Maximum zero adjustment 4. Center of range 5. Minimum zero adjustment 6. Lower OK Limit 7. Scale at maximum zero adjustment 8. Scale at minimum zero adjustment

Figure 5-5: Zero Position Voltage Range Example


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5.5.3 Adjusting the Zero Position

1. Use one of the methods listed in the 3500 Monitoring System Rack Configuration and Utilities Guide (part number 129777-01) to connect the rack configuration computer to the 3500 rack.

2. Run the 3500 Rack Configuration Software.

3. Initiate communication with the rack by clicking on the Connect option in the File menu and then selecting the connection method that you used in step 1.

4. Upload the configuration from the rack by clicking on the Upload option in the File menu.

5. Select the Options button on the 3500 System Configuration screen.

6. Select the monitor you want to adjust. The Monitor screen will appear.

7. Select the Options button under the appropriate Channel. The Channel Options screen will appear.

8. Enter the voltage in the Zero Position or the Gap Position box. The software limits changes to the values that are listed adjacent to the box. If you select Adjust to go to the Adjust screen, you can see the results as you adjust the Zero Position.

9. Return to the 3500 System Configuration screen by clicking on OK buttons in the successive screens. The software now adds the new Zero Position or Gap Position to the configuration for this channel.

10. Select the Download option in the File menu and then select the appropriate monitor to download the new configuration to the appropriate monitor. The new setting for Zero Position will take effect when the "Download successful" prompt appears.

5.6 If a Channel Fails a Verification Test When handling or replacing circuit boards, always be sure to adequately guard against damage from Electrostatic Discharge (ESD). Always wear a proper wrist strap and work on a grounded conductive work surface.

1. Use the 3500 Rack Configuration Software to save the configuration for the module.

2. Replace the module with a spare. Refer to the installation section in the 3500 Monitoring System Rack Installation and Maintenance Manual (part number 129766-01).

3. Return the faulty board to Bently Nevada LLC for repair.

4. Use the 3500 Rack Configuration Software to download the configuration for the spare module.


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5. Verify the operation of the spare.

5.7 Performing Firmware Upgrades Occasionally you may need to upgrade the original firmware that ships with the 3500/40M Proximitor Monitor. The following instructions describe how to use the 3500 Rack Configuration Software to upgrade the existing firmware. You must use the 3500 Rack Configuration Software to reconfigure the monitor after upgrading its firmware.

Application Alert

During the following procedure you must not interrupt power to the rack or remove the monitor you are upgrading from the rack. If either of these occurs the monitor may become inoperable.

1. Start the 3500 Rack Configuration Software and connect to the rack.

2. Upload and save the current configuration of the monitor, as the upgrade process will erase all configuration information in the monitor.

3. Under the Utilities menu option, select Update Firmware.

Figure 5-6: Firmware Download Screen

4. Select the module that you wish to update and click on the OK button.


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5. The software will request you to select the file that you wish to download. Select the file and click on the Open button. The software will now download the file.

6. After the download completes, reload the configuration to the monitor. If the process fails then the monitor will revert to its old code. Under no circumstances should you remove the monitor until the update process finishes.

Section 6 - Troubleshooting

37

6. Troubleshooting 6.1 Introduction

This section describes how to use the information provided by the self-test, the LED’s, the System Event List, and the Alarm Event List to troubleshoot a problem with the monitor.

6.2 Self-Test To perform the monitor self-test:

1. Connect a computer running the 3500 Rack Configuration Software to the 3500 rack (if required).

2. Select Utilities from the main screen of the 3500 Rack Configuration Software.

3. Select System Events/Module Self-test from the Utilities menu.

4. Press the Module Self-test button on the System Events screen.


The system will lose Machinery protection will be lost while the monitor

is performing its self-test.

5. Select the slot that contains the monitor and press the OK button. The monitor will perform a full self-test and the software will display the System Events screen. The list will not contain the results of the self-test.

6. Wait 30 seconds for the module to run a full self-test.

7. Press the Latest Events button. Software will update the System Events screen to include the results of the monitor self-test.

8. Verify that the monitor passed the self-test. If the monitor failed the self-test, refer to Section 6.4, “System Event List Messages”.


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6.3 LED Fault Conditions Table 6-1 provides information for using the LED’s to diagnose and correct problems.

Table 6-1: Summary of LED Fault Conditions

OK LED TX/RX BYPASS Condition Solution

1 Hz 1 Hz Not relevant

Monitor is not configured, is in Configuration Mode, or in Calibration Mode.

Reconfigure the Monitor, or exit Configuration, or Calibration Mode.

5 Hz Not relevant

Not relevant Monitor error Check the System Event

List for severity.

ON Flashing Not relevant Module is operating correctly No action required.

OFF Not relevant

Not relevant

Monitor is not operating correctly or the transducer has faulted and has stopped providing a valid signal.

Check the System Event List and the Alarm Event List.

2 Hz Not relevant

Not relevant

Monitor is configured for Timed OK Channel Defeat and has been Not OK since the last time the RESET button was pressed.

Press the Reset button on the Rack Interface Module. Check the System Event List.

Not relevant

Not flashing

Not relevant

Monitor is not operating correctly.

Monitor is not executing alarming functions. Replace immediately.

ON Not relevant OFF Alarm Enabled No action required.

ON Not relevant ON Some or all Alarming

Disabled No action required.

6.4 System Event List Messages This section describes the messages that the monitor enters into the System Event List Messages and gives an example of one message.

6.4.1 Example of a System Event List Message Table 6-2: Sample System Event List Message

Sequence Number Event Information Event

Number Class Event Date DD/MM/YY Event Time Event

Specific Slot

0000000123 Device Not Communicating 32 1 02/01/90 12:24:31:99 5L

Sequence Number: This is the number of the event in the System Event List (for example 123).


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Event Information: This provides the name of the event (for example Device Not Communicating).

Event Number: This identifies the specific event that occurred.

Class: This indicates the severity of the event. The following classes are available:

Table 6-3: System Event List Classes

Class Value Classification

0 Severe/Fatal Event

1 Potential Problem Event

2 Typical Logged Event

3 Reserved

Event Date: This specifies the date that the event occurred.

Event Time: This specifies the time that the event occurred.

Event Specific: This provides additional information for the events that use this field.

Slot: This identifies the module with which the event is associated. If a half-height module is installed in the upper slot or a full-height module is installed, the field will be 0 to 15. If a half-height module is installed in the lower slot, then the field will be 0L to 15L. For example, a module installed in the lower position in slot 5 would be 5L.

6.4.2 List of Messages

The monitor may place the following messages, which are listed in numerical order, in the System Event List. If an event marked with a star (*) occurs the monitor will stop alarming. If you are unable to resolve any problems contact your nearest Bently Nevada LLC office.

Flash Memory Failure

Event Number: 11 Event Classification: Severe / Fatal Event Action: Replace the Monitor Module as soon as possible.

EEPROM Memory Failure

Event Number: 13 Event Classification: Potential Problem or Severe / Fatal Event Action: Replace the Monitor Module as soon as possible.


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Device Not Communicating

Event Number: 32 Event Classification: Potential Problem Action: Determine whether one of the following components is faulty:

• the Monitor Module • the rack backplane

Device Is Communicating

Event Number: 33 Event Classification: Potential Problem Action: Determine whether one of the following components is faulty:


* Neuron Failure

Event Number: 34 Event Classification: Severe / Fatal Event Action: Replace the Monitor Module immediately. Monitor Module will stop

alarming.

* I/O Module Mismatch

Event Number: 62 Event Classification: Severe / Fatal Event Action: Verify that the type of I/O module installed in the rack matches the

type of I/O module selected in the software. If the correct I/O module is installed, there may be a fault with the Monitor Module or the Monitor I/O module. Monitor Module will stop alarming.

I/O Module Compatible


type of I/O module selected in the software. If the correct I/O module is installed, there may be a fault with the Monitor Module or the Monitor I/O module.


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* Fail I/O Jumper Check


type of I/O module selected in the software. If the correct I/O module is installed, there may be a fault with the Monitor Module or the Monitor I/O module. Monitor Module will stop alarming.

Pass I/O Jumper Check

Event Number: 65 Event Classification: Severe / Fatal Event Action: Verify that the type of I/O module installed matches what was

selected in the software. If the correct I/O module is installed, there may be a fault with the Monitor Module or the Monitor I/O module.

Fail Main Board +5V-A (Fail Main Board +5V - upper Power Supply)

Event Number: 100 Event Classification: Potential Problem Action: Verify that noise from the power source is not causing the problem.

If noise is not the cause of the problem, determine whether one of the following components is faulty:

• the Monitor Module • the Power Supply installed in the upper slot

Pass Main Board +5V-A (Pass Main Board +5V - upper Power Supply)


If the problem is not caused by noise, determine whether one of the following components is faulty:


Fail Main Board +5V-B (Fail Main Board +5V - lower Power Supply)

Event Number: 102 Event Classification: Potential Problem


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Action: Verify that noise from the power source is not causing the problem. If noise is not the cause of the problem, determine whether one of the following components is faulty:

• the Monitor Module • the Power Supply installed in the lower slot

Pass Main Board +5V-B (Pass Main Board +5V - lower Power Supply)




* Fail Main Board +5V-AB (Fail Main Board +5V - upper and lower Power Supplies)

Event Number: 104 Event Classification: Severe/Fatal Event Action: Verify that noise from the power source is not causing the problem.


• the Monitor Module • the Power Supply installed in the upper slot • the Power Supply installed in the lower slot • Monitor Module will stop alarming.

Pass Main Board +5V-AB (Pass Main Board +5V - upper and lower Power Supplies)



• the Monitor Module • the Power Supply installed in the upper slot • the Power Supply installed in the lower slot


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Fail Main Board +15V-A (Fail Main Board +15V - upper Power Supply)


If noise is not the cause of the problem, check to see if one of the following components is faulty:


Pass Main Board +15V-A (Pass Main Board +15V - upper Power Supply)




Fail Main Board +15V-B (Fail Main Board +15V - lower Power Supply)




Pass Main Board +15V-B (Pass Main Board +15V - lower Power Supply)


If noise is not the cause of the problem, check to see if one of the following components is faulty:



44

* Fail Main Board +15V-AB (Fail Main Board +15V - upper and lower Power Supplies)



• the Monitor Module • the Power Supply installed in the upper slot • the Power Supply installed in the lower slot • Monitor Module will stop alarming.

Pass Main Board +15V-AB (Pass Main Board +15V - upper and lower Power Supplies)




Fail Main Board -24V-A (Fail Main Board -24V - upper Power Supply)




Pass Main Board -24V-A (Pass Main Board -24V - upper Power Supply)




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Fail Main Board -24V-B (Fail Main Board -24V - lower Power Supply)




Pass Main Board -24V-B (Pass Main Board -24V - lower Power Supply)




* Fail Main Board -24V-AB (Fail Main Board -24V - upper and lower Power Supplies)




Monitor Module will stop alarming.

Pass Main Board -24V-AB (Pass Main Board -24V - upper and lower Power Supplies)

Event Number: 117 Event Classification: Severe/Fatal Event


46

Action: Verify that noise from the power source is not causing the problem. If noise is not the cause of the problem, determine whether one of the following components is faulty:


Fail Main Board -24V-A or B (Fail Main Board -24V Pre-Regulation)*




*Only the 3500/40M will return this event, and only if the rack is configured for 2 power supplies.

Pass Main Board -24V-A or B (Pass Main Board -24V Pre-Regulation)*


If noise if not the cause of the problem, determine whether one of the following components is faulty:


*Only the 3500/40M will return this event, and only if the rack is configured for 2 power supplies.

* Fail Main Board +3.3V-AB (Fail Main Board +3.3V)



• the Monitor Module


47

• the Power Supply installed in the upper slot • the Power Supply installed in the lower slot


Pass Main Board +3.3V-AB (Pass Main Board +3.3V)




* Fail Main Board +2.5V-AB (Fail Main Board +2.5V)





Pass Main Board +2.5V-AB (Pass Main Board +2.5V)





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Device Configured

Event Number: 300 Event Classification: Typical Logged Event Action: No action required.

* Configuration Failure

Event Number: 301 Event Classification: Severe/Fatal Event Action: Download a new configuration to the Monitor Module. If the

problem persists, replace the Monitor Module immediately. Monitor Module will stop alarming.

Configuration Failure

Event Number: 301 Event Classification: Potential Problem Action: Download a new configuration to the Monitor Module. If the

problem persists, replace the Monitor Module as soon as possible.

* Module Entered Cfg Mode (Module Entered Configuration Mode)

Event Number: 302 Event Classification: Typical Logged Event Action: No action required. Monitor Module will stop alarming.

Software Switches Reset

Event Number: 305 Event Classification: Potential Problem Action: Download the software switches to the Monitor Module. If the

software switches are not correct, replace the Monitor Module as soon as possible.

Internal Cal Reset (Internal Calibration Reset)

Event Number: 307 Event Classification: Severe/Fatal Event Event Specific: Ch pair x Action: Replace Monitor Module immediately.


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Monitor TMR PPL Failed (Monitor TMR Proportional value Failed)

Event Number: 310 Event Classification: Potential Problem Action: Replace the Monitor Module.

Monitor TMR PPL Passed (Monitor TMR Proportional value Passed)

Event Number: 311 Event Classification: Potential Problem Action: Replace the Monitor Module.

Module Reboot


* Module Removed from Rack


Module Inserted in Rack


Device Events Lost

Event Number: 355 Event Classification: Typical Logged Event Action: No action required. This may be due to the removal of the Rack

Interface Module for an extended period of time.

Module Alarms Lost

Event Number: 356 Event Classification: Typical Logged Event Action: No action required. This may be due to the removal of the Rack

Interface Module for an extended period of time.


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* Module Entered Calibr. (Module Entered Calibration Mode)


Module Exited Calibr. (Module Exited Calibration Mode)


Pass Module Self-test


* Enabled Ch Bypass (Enabled Channel Bypass)

Event Number: 416 Event Classification: Typical logged event Event Specific: Ch x Action: No action required. This action inhibits alarming.

Disabled Ch Bypass (Disabled Channel Bypass)

Event Number: 417 Event Classification: Typical logged event Event Specific: Ch x Action: No action required.

* Enabled Alert Bypass

Event Number: 420 Event Classification: Typical logged event Event Specific: Ch x

Action: No action required. Alarming has been inhibited by this action.


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Disabled Alert Bypass


* Enabled Danger Bypass

Event Number: 422 Event Classification: Typical logged event Event Specific: Ch x Action: No action required. Alarming has been inhibited by this action.

Disabled Danger Bypass


* Enabled Special Inh (Enabled Special Inhibit)

Event Number: 424 Event Classification: Typical logged event Event Specific: Ch x Action: No action required. Alarming has been inhibited by this action.

Disabled Special Inh (Disabled Special Inhibit)


* Enabled Mon Alarm Byp (Enabled Monitor Alarm Bypass)

Event Number: 426 Event Classification: Typical logged event Action: No action required. Monitor Module will stop alarming.


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Disabled Mon Alarm Byp (Disabled Monitor Alarm Bypass)

Event Number: 427 Event Classification: Typical logged event Action: No action required.

* Fail Slot Id Test

Event Number: 461 Event Classification: Severe/Fatal Event Action: Verify that the Monitor Module is fully inserted in the rack. If the

Monitor Module is installed correctly, determine whether one of the following components is faulty:



Pass Slot Id Test

Event Number: 462 Event Classification: Severe/Fatal Event Action: Verify that the Monitor Module is fully inserted in the rack. If the

Monitor Module is installed correctly, determine whether one of the following components is faulty:


* Enabled Test Signal

Event Number: 481 Event Classification: Typical logged event Action: No action required. Monitor Module will stop alarming.

Disabled Test Signal

Event Number: 482 Event Classification: Typical logged event Action: No action required.


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Switch To Primary Kph

Event Number: 491 Event Classification: Potential Problem Event Specific: Ch pair x Action: Determine whether one of the following is faulty:

• the secondary Keyphasor transducer on the machine • the Monitor Module

Switch To Backup Kph


• the primary Keyphasor transducer on the machine • the Monitor Module

* Kph Lost


• both Keyphasor transducers on the machine • the Monitor Module • the Keyphasor Module

For vector and Keyphasor based, alarms the Monitor Module will stop alarming.

DSP Reset Attempted

Event Number: 501 Event Classification: Severe / Fatal Event Event Specific: Ch pair x Action: If the System Event List contains repeated instances of this

message, then replace the Monitor Module immediately.

* DSP Self-test Failure

Event Number: 502 Event Classification: Severe / Fatal Event


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Event Specific: Ch pair x Action: Replace the Monitor Module immediately. Monitor Module will stop

alarming.

* DSP Self-test Failure

Event Number: 503 Event Classification: Severe / Fatal Event Event Specific: Ch pair x Action: Replace the Monitor Module immediately. Monitor Module will stop

alarming.

6.5 Alarm Event List Messages Table 6-4 summarizes the Alarm Event List Messages that the monitor returns.

Table 6-4: Alarm Event List Messages

Alarm Even List Message When the Message will occur

Entered Alert/ Alarm 1 A proportional value in the channel has entered Alert / Alarm 1 and changed the channel Alert / Alarm 1 status

Left Alert/ Alarm 1 A proportional value in the channel has left Alert / Alarm 1 and changed the channel Alert / Alarm 1 status

Entered Danger/ Alarm 2 A proportional value in the channel has entered Danger / Alarm 2 and changed the channel Danger / Alarm 2 status

Left Danger/ Alarm 2 A proportional value in the channel has entered Danger / Alarm 2 and changed the channel Danger / Alarm 2 status

Entered Not OK Module went not OK

Left Not OK Module returned to the OK state

6.6 Gateway Status Bits The monitor reports the status bits in Table 6-5 to other monitors. These bits are visible in such places as the Modbus® communications registers in the Communication Gateway. Whenever some event unexpectedly sets one of these status bits, you should consult the System Events List for more information.


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Table 6-5: Summary of Gateway Status Bits

Gateway Status Bit When the Message Will Occur

Channel not OK Module went Not OK

Channel Alert/Alarm 1 A proportional value in the channel has entered Alert / Alarm 1 and changed the channel Alert / Alarm 1 status

Channel Danger/ Alarm 2 A proportional value in the channel has entered Danger / Alarm 2 and changed the channel Danger / Alarm 2 status

Channel in Bypass Channel Bypass switch for this channel has been set

Channel Off Channel is inactive

Channel Trip Multiply Mode Channel has been placed in Trip Multiply

Special Alarm Inhibit The alarm inhibit switch has been set for this channel

Channel Not Monitoring Alarming has been disabled for this channel

KPH Not OK Keyphasors associated with this channel are invalid

Signal Path Not OK Monitor is not receiving a transducer signal

Section 7 - Radial Vibration General Information

57

7. Radial Vibration General Information Radial vibration is the dynamic motion of a shaft or casing in a direction that is perpendicular to the shaft axis. 3500 Radial Vibration channels use signals from proximity probes to measure this motion.

In a 3500 Monitoring System, you program the Radial Vibration channels in pairs. These channels, depending on configuration, typically condition the input signals into various parameters called “proportional values”. These values, together with a Keyphasor signal, provide phase measurements. When you position 2 proximity probes in an X-Y or orthogonal orientation, the 3500 software can use the dynamic data to create orbit, full spectrum, and shaft centerline plots for enhanced machinery management.

Radial Vibration channels also provide setpoints that you can use for alarming. You can configure Alert setpoints for each active proportional value and Danger setpoints for any 2 of the active proportional values.

Section 8 - Radial Vibration Configuration

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8. Radial Vibration Configuration 8.1 Introduction

This section discusses the configuration considerations and the 3500 Rack Configuration Software screens that are associated with the Radial Vibration Channel.

8.2 Configuration Considerations Consider the following items before configuring a Radial Vibration Channel:

• 7200 11mm and 14mm Proximitor sensors, 3000 Proximitor sensors, and the 3300 16mm HTPS do not currently support internal barrier I/O modules or external barriers.

• When you select "No Keyphasor", you cannot select 1X Amplitude (Ampl) and Phase Lag, 2X Amplitude (Ampl) and Phase Lag, Not 1X Amplitude (Ampl), and Smax Amplitude (Ampl).

• If you select a Keyphasor channel, then you must install a Keyphasor module in the rack.

• You can enable the 1X and 2X Phase values only if you configure the selected Keyphasor channel for an events per revolution equal to 1.

• The transducer type determines the full-scale options that the software will allow for each proportional value.

• If you select a Non-standard transducer, software sets the setpoint OK limits to ±1 volt from the Upper and Lower OK Limits that you select.

• There are 2 selections for 3000 Series transducers: 3000 (-24V) Proximitor and 3000 (-18V) Proximitor.

- Select the 3000(-24V) Proximitor option when you will connect a 3000 Series Proximitor sensor directly to a 3500 monitor. The software will select a default scale factor of 285 mV/mil, which you may adjust ±15%. Note that the monitor does not compensate the buffered transducer signals on the front of the monitors and to the Data Manager and that you should interpret them at 285 mV/mil.

- Select the 3000(-18V) Proximitor option when you will connect a 3000 Series Proximitor sensor directly to a 3500 monitor, but supply power to the Proximitor sensor from an external 18V source. Software will select a default scale factor of 200 mV/mil, which you may adjust ±15%. Note that the monitor does not compensate the


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buffered transducer signals on the front of the monitors and to the Data Manager and that you should interpret them at 200 mV/mil.

• You may set setpoints only on enabled proportional values.

• You must configure monitors in channel pairs (for example, you may configure Channels 1 and 2 as Radial Vibration and Channels 3 and 4 as Thrust Position).

• When you modify a full-scale range, you should readjust the setpoints that are associated with this proportional value.

• It is best to set the Scale Factor value and the Trip Multiply value before the Zero Position value.

• 3000 (-18V), 3000 (-24V), and 3300 RAM Proximitor sensors have limited linear ranges. Therefore, you should use caution when selecting the Full-scale range of the Direct, 1X Amplitude (Ampl), 2X Amplitude (Ampl), Not 1X Amplitude (Ampl) and Smax Amplitude (Ampl) PPLs. Full-scale value x Trip Multiply should not exceed the linear range of the transducer.

• Phase-dependent measurements require a minimum signal amplitude of 42.7 mV and a minimum Keyphasor frequency of 1.2 Hz.

8.3 Configuration Options This section describes the options that the Radial Vibration Channel configuration screen provides.

Figure 8-1: Radial Vibration Configuration Screen


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8.3.1 General Parameters and Buttons

8.3.1.1 Timed OK Channel Defeat

This option prevents a channel from returning to an OK status until that channel's transducer has remained in an OK state for 30 seconds. Software always enables this feature in the Radial Vibration channels. The option protects against false trips that intermittent transducers can cause.

8.3.1.2 CP Mod

Selecting the CP Mod button in the Channel Options Dialog Box allows you to download a Custom channel configuration to the monitor. The 3500 Rack Configuration Software stores custom configuration data in a Custom Products Modification File. Custom Products Modification files follow the naming convention <modification #.mod>. You must place these files in the \3500\Rackcfg\Mods\ directory. When you select a CP Mod file, the software displays a window that describes the function of the modification. CP Mod files are available through Bently Nevada LLC's Custom Products Division. Contact your local sales representative for details.

8.3.1.3 Zero Position (Gap)

This value represents the zero position (in volts) when the Gap scale is to read the engineering units of displacement. To maximumize the amount of zero adjustment, you should gap the probe as closely as possible to the center gap voltage specified in Table 8-4, “OK Limits by Transducer Type”. This field is not available for Voltage Gap Scale.

8.3.1.4 Adjust Button

This control adjusts the Zero Position voltage. Clicking this button will start a utility that helps you set the gap zero position voltage. Since this utility provides active feedback from the 3500 rack you will require a connection with the rack to use it. Refer to Section 5.5, “Adjusting the Scale Factor and Zero Position” for more information.

8.3.1.5 Trip Multiply

The Trip Multiply value temporarily increases the alarm (Alert and Danger) setpoint values. Manual (operator) action normally applies this value during startup to allow a machine to pass through high vibration speed ranges without triggering monitor alarm indications. High vibration speed ranges may include system resonances and other normal transient vibrations.

8.3.1.6 Direct Frequency Response

The Direct Frequency Response determines the upper and lower corners for the band-pass filter that the monitor uses with direct vibration measurements. The available ranges are 240 to 240,000 cpm and 60 to 36,000 cpm.


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8.3.1.7 Transducer Jumper Status (on I/O Module)

This option returns the position of the transducer jumper on the I/O Module. Refer to Section Error! Reference source not found.. “Error! Reference source not found.”, if applicable.



8.3.2.1 Channel

This value specifies the number of the channel (1 through 4) that you are configuring.

8.3.2.2 Slot

This value specifies the location of the monitor in the 3500 rack (2 through 15).

8.3.2.3 Rack Type

This value specifies the type of Rack Interface Module (Standard or TMR) that is installed in the rack.

8.3.3 Enable

An enabled proportional value specifies that the channel will provide the value ( enabled, disabled).

8.3.3.1 Direct

Direct data represents the overall peak-to-peak vibration. This proportional value includes all frequencies within the selected Direct Frequency Response.

8.3.3.2 Gap

Gap is the physical distance between the face of a proximity probe tip and the observed surface. Gap can express this distance in terms of displacement (mils, micrometres) or in terms of voltage. Standard polarity convention dictates that a decreasing gap results in an increasing (less negative) output signal.


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Table 8-1: Gap Full-scale Ranges by Transducer Type

3300–5 mm Proximitor 3300 XL 8 mm Proximitor

3300–8 mm Proximitor 7200–5 mm Proximitor 7200–8 mm Proximitor

3300 XL 11 mm Proximitor 7200–11 mm Proximitor 7200–14 mm Proximitor

3300–16 mm HTPS Non-standard

3000 (-18V) Proximitor 3000 (-24V) Proximitor 3300 RAM Proximitor

-24 Vdc 15-0-15 mil 25-0-25 mil

300-0-300 µm 600-0-600 µm

Custom

-24 Vdc 15-0-15 mil 25-0-25 mil 50-0-50 mil

300-0-300 µm 600-0-600 µm

1000-0-1000 µm Custom

-24 Vdc 15-0-15 mil

300-0-300 µm

8.3.3.3 1X Ampl

In a complex vibration signal, 1X Ampl is the notation for the amplitude component that occurs at the rotative speed frequency.

8.3.3.4 1X Phase Lag

In a complex vibration signal, 1X Phase Lag is the notation for the phase lag component that occurs at the rotative speed frequency.

8.3.3.5 2X Ampl

In a complex vibration signal, 2X Ampl is the notation for the amplitude component having a frequency equal to twice the shaft rotative speed.


In a complex vibration signal, 2X Phase Lag is the notation for the phase lag component having a frequency equal to twice the shaft rotative speed. 2X phase lag is the angular measurement from the leading or trailing edge of the Keyphasor pulse to the following positive peak of the 2X vibration signal.

8.3.3.7 Not 1X Ampl

In a complex vibration signal, Not 1X Ampl is the notation for the amplitude component that occurs at frequencies other than rotative speed.

8.3.3.8 Smax Ampl

Smax amplitude is the single peak measurement of unfiltered XY (orthogonal) probes, in the measurement planes, against a calculated "quasi zero" point. Each channel pair (channel 1 or channel 3) returns only 1 Smax Ampl value.


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8.3.3.9 Full-Scale Range

Each selectable proportional value provides the ability to set a full-scale value. If the desired full-scale value is not in the pull down list, then you can choose the “Custom” selection.

The values in Table 8-2 are the same for all transducer types.

Table 8-2: Available Full-Scale Values

Direct 1X Ampl 2X Ampl

Not 1X Ampl Smax Ampl

0-3 mil pk-pk 0-5 mil pk-pk

0-10 mil pk-pk 0-15 mil pk-pk 0-20 mil pk-pk

0-100 µm pk-pk 0-150 µm pk-pk 0-200 µm pk-pk 0-400 µm pk-pk 0-500 µm pk-pk

Custom

8.3.3.10 Clamp Value

This is the value to which a proportional value goes when some condition bypasses or defeats that channel or proportional value (such as when the transducer experiences a problem). You can select a value between the minimum and maximum full-scale range values. 1X and 2X Phase Lag have available values of 0 to 359 degrees. The monitor clamps only the values available from the Recorder Outputs, Communication Gateway, and Display Interface Module when the proportional value is invalid.

8.3.3.11 Recorder Output

This is the proportional value of a channel that the monitor sends to the 4 to 20 mA recorder. The recorder output is proportional to the measured value over the channel full-scale range. An increase in the proportional value that a bar graph display would indicate as upscale will increase the current at the recorder output.

If you select 1X Phase Lag or 2X Phase Lag then the 2 available options are “with Hysteresis” and “without Hysteresis”. If the channel is in Bypass the monitor will clamp the output to the selected clamp value (or to 2 mA if you select the 2 mA clamp option).


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The Hysteresis option helps prevent the Recorder Output from jumping from Full to Bottom Scale when the phase measurement is near 0 or 359 degrees. When you check the Hysteresis option, the recorder signal operates as follows:

• The monitor scales the recorder output so that 4 mA corresponds to 0 degrees and 20 mA corresponds to 380 degrees (360 plus 20 degrees).

• An increasing phase measurement does not transition until the measurement has gone 20 degrees past 360 degrees. At this point, the recorder signal switches from 20 mA to a signal that corresponds to 20 degrees, or 4.842 mA.

• A decreasing phase measurement transitions at 0 degrees (4 mA). At this point, the recorder signal switches from 4 mA to a signal that corresponds to 360 degrees, or 19.158 mA.

8.3.4 Delay

Delay is the time for which a proportional value must remain at or above an over alarm level, or below an under alarm level, before the monitor declares an alarm as active.

8.3.4.1 Alert

Alert is the first level alarm that occurs when the transducer signal level exceeds the selected Alert/Alarm 1 setpoint. You can set this setpoint on the Setpoint screen. The Alert time delay is always in 1-second increments (from 1 to 60 seconds) for all available proportional values.

8.3.4.2 Danger

Danger is the second level alarm that occurs when the transducer signal level exceeds the selected Danger/Alarm 2 setpoint. You can set this setpoint on the Setpoint screen.

8.3.4.3 100 ms Option

The 100 ms (typical) option applies only to the Danger time delay and has the following effects:

If the 100 ms option is OFF ( ):

• You can set the Danger time delay in 1-second increments (from 1 to 60 seconds).

• You can set the Danger time delay for up to 2 available proportional values.

If the 100 ms option is ON ( ):

• The software sets the Danger time delay to 100 ms.


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You can set the Danger time delay for only the primary proportional value.

8.3.5 Transducer Selection

8.3.5.1 Type

The following transducer types are available for the Radial Vibration Channel with a non-barrier I/O module.

3300 Transducers

• 3300 XL 8mm Proximitor sensor


• 3300 5mm Proximitor sensor


• 3300 RAM Proximitor sensor

• 3300 16mm HTPS

7200 Transducers





3000 Transducers

• 3000 (-18 V) Proximitor sensor

• 3000 (-24 V) Proximitor sensor

Non-standard

The following transducer types are available for the Radial Vibration Channel with a barrier I/O module.

3300 Transducers







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7200 Transducers



Non-standard

8.3.5.2 Customize Button

The Customize button adjusts the Scale Factor for transducers. Refer to Section 5.5, “Adjusting the Scale Factor and Zero Position”. Also, note that:

• If you select “Non-standard” as the transducer type, you can also adjust the OK Limits.

• The Non-standard transducer's scale factor must be between 85 and 230 mV/mil.

• The Upper and Lower OK Limits must differ by at least 2 volts.

Figure 8-2: Non-Standard Transducer Configuration Screen

Table 8-3: Scale Factor by Transducer Type (±15% scale factor adjustment allowed)

Transducer Type Without Barriers (mV/mil)

With Bently Nevada™

Internal Barriers (mV/mil)

Standard I/O With Barriers

(mV/mil)

Discrete TMR I/O With Barriers (mV/mil)

Bussed TMR I/O With Barriers (mV/mil)

3300 XL 8mm 200 200 192 200 199

3300 5mm 200 200 192 200 199

3300 8mm 200 200 192 200 199

3300 XL 11mm 100 100 96 100 100


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With Bently Nevada™

Internal Barriers (mV/mil)

Standard I/O With Barriers

(mV/mil)

Discrete TMR I/O With Barriers (mV/mil)

Bussed TMR I/O With Barriers (mV/mil)

7200 5mm 200 200 192 200 199

7200 8mm 200 200 192 200 199

7200 11 mm 100 Not supported Not supported Not supported Not supported 7200 14 mm 100 Not supported Not supported Not supported Not supported 3000 (-18 V) 200 Not supported Not supported Not supported Not supported 3000 (-24 V) 285 Not supported Not supported Not supported Not supported 3300 RAM 200 200 192 200 199

3300 16mm HTPS 100 Not supported Not supported Not supported Not supported

Table 8-4: OK Limits by Transducer Type

Upper OK Limit (V) Lower OK Limit (V) Center Gap Voltage (V)

Transducer Without Barriers

With Barriers

Without Barriers

With Barriers

Without Barriers

With Barriers

3300 XL 8mm -16.75 -16.75 -2.75 -2.75 -9.75 -9.75

3300 XL 11mm -16.75 -16.75 -2.75 -2.75 -9.75 -9.75

3300 5mm -16.75 -16.75 -2.75 -2.75 -9.75 -9.75

3300 8mm -16.75 -16.75 -2.75 -2.75 -9.75 -9.75

7200 5mm -16.75 -16.75 -2.75 -2.75 -9.75 -9.75

7200 8mm -16.75 -16.75 -2.75 -2.75 -9.75 -9.75

7200 11mm -19.65 Not supported -3.55 Not

supported -11.6 Not supported



3000 (-18 V) -12.05 Not supported -2.45 Not




3300 RAM -12.55 -12.15 -2.45 -2.45 -7.5 -7.3

3300 16mm HTPS -16.75 Not supported -2.75 Not


Note for Table 8-4: “With Barriers” includes Bently Nevada™ Internal Barrier I/O Modules.

8.3.6 Alarm Mode

Alert should be the first level alarm that occurs when the transducer signal level exceeds the selected value. Danger should be the second level alarm that occurs when the transducer signal level exceeds the selected value. You set the Alert and Danger values on the Setpoint screen.


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8.3.6.1 Latching

Once a latching alarm is active it will remain active even after the proportional value drops below the configured setpoint level. The channel will remain in alarm until you use one of the following methods to reset it:

• Pressing the reset switch on the front of the Rack Interface Module

• Closing the contact on the Rack Interface I/O Module

• Clicking the Reset button in the Operator Display Software

• Issuing the reset command through the Communication Gateway Module

• Issuing the reset command through the Display Interface Module

• Issuing the reset command in the 3500 Rack Configuration Software

8.3.6.2 Non-latching

When a non-latching alarm is active it will go inactive as soon as the proportional value drops below the configured setpoint level.

8.3.7 Transducer Orientation

The Degrees value specifies the location of the transducer on the machine. The range for orientation angle is 0 to 180 degrees left or right as observed from the driver to the driven end of the machine train. Refer to Figure 8-3.

1. Shaft 2. Driver end 3. Driven end

4. 0°

5. 90° right

6. 180°

7. 90° left

Figure 8-3: Shaft Orientation For Horizontal Shafts


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8.3.8 Barriers

Barriers are devices that restrict the amount of energy that can flow into a hazardous area. Select the MTL 796(-) Zener External option or Galvanic Isolators if you will connect external safety barriers between the monitor and the transducer. If your application uses an internal barrier I/O module, select the internal option.

8.4 Alarm Setpoints This section lists the available setpoints for the Radial Vibration channel. A setpoint is the level within the full-scale range that determines when an alarm occurs. The 3500 Monitoring System allows you to set Alert/Alarm 1 setpoints for every proportional value on each channel. The channel will drive an Alert/Alarm 1 indication if 1 or more of the channel proportional values exceed their setpoints. The 3500 Monitoring System also allows you to set up to 4 Danger/Alarm 2 setpoints (2 over setpoints and 2 under setpoints) for up to 2 of the proportional values. You may select any 2 of the available proportional values for the channel.

NOTE

You can set the setpoint over and under limits only within the OK limits of the

specified transducer.

Use the Setpoint Configuration screen in the 3500 Rack Configuration Software (shown in Figure 8-4) to adjust Alert/Alarm 1 and Danger/Alarm 2 setpoints for Radial Vibration channels.


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Figure 8-4: Radial Vibration Setpoint Configuration Screen

8.4.1 Available Setpoints

Table 8-5 lists the Alert/Alarm 1 and Danger/Alarm 2 setpoints that are available for each Radial Vibration channel pair. The Communication Gateway and Display Interface Modules use the setpoint number.

Table 8-5: Radial Vibration Available Setpoints

Setpoint Number Radial Vibration

1 Over Direct

2 Over Gap

3 Under Gap

4 Over 1X Ampl

5 Under 1X Ampl

6 Over 1X Phase Lag

7 Under 1X Phase Lag

8 Over 2X Ampl

9 Under 2X Ampl

10 Over 2X Phase Lag


12 Over Not 1X Ampl

13 Over Smax Ampl

14 Danger (configurable)





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8.4.2 Alarm Hysteresis

The alarming hysteresis for all channel configurations is 1/64th of full scale. When a channel exceeds an alarm setpoint, it must fall back below the setpoint less the amount of hysteresis before it can go out of alarm.

Example:

Consider a channel configuration with a 0–10 mils full-scale range and an alarm setpoint at 6 mils. Full scale is 10 mils – 0 mils = 10 mils, so the hysteresis = 10 mils/64 = 0.16 mils. The channel input, therefore, must fall below 6 mils - 0.16 mils = 5.84 mils before the channel is out of alarm.

Section 9 - Radial Vibration Verification

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9. Radial Vibration Verification 9.1 Introduction

The following sections describe how to test alarms, verify channels, and test OK limits for channels configured as Radial Vibration. You verify the output values and alarm setpoints by varying the input vibration signal level (both peak-to-peak amplitude and dc voltage bias) and verifying that the Verification screen reports the correct results on the test computer.

You can configure the Radial Vibration channels for the channel values and alarms shown in Table 9-1.

Table 9-1: Radial Vibration Channel Values and Alarms

Channel Values Over Alarms Under Alarms

Direct X

Gap X X

1X Amplitude and Phase X X

2X Amplitude and Phase X X

Not 1X Amplitude X

Smax Amplitude X

9.2 Test Equipment and Software Setup You can use the following test equipment and software setup as the initial set up that all the Radial Vibration channel verification procedures (Test Alarms, Verify Channels, and Test OK Limits) require.

DANGER

High voltage present. Contact with high voltage could cause shock, burns, or

death. Do not touch exposed wires or terminals.


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Application Advisories

1. Tests will exceed alarm setpoint levels and activate alarms. This could cause relay contacts to change state.

2. Disconnecting the field wiring will cause a Not OK condition.

9.2.1 Test Equipment Setup

Connect the power supply, function generator, Keyphasor multiplier/divider, and multimeter to COM and SIG of channel 1 with polarity as shown in Figure 9-1 to simulate the transducer signal. Note that 1X Amplitude and Phase, 2X Amplitude and Phase, Not 1X Amplitude, and Smax Amplitude require the equipment shown inside the dashed lines. The test equipment outputs should be floating relative to earth ground.

Set the test equipment as shown in Table 9-2.

Table 9-2: Test Equipment Settings

Power Supply Function Generator Keyphasor Multiplier/Divider

-7.00 Vdc Waveform: Sine wave DC Volts: 0 Vdc

Frequency: 100 Hz Amplitude level: Minimum (above zero)

Multiply Switch: 001 Divide Switch: 001


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10

1

2

3 45

9

6 7

8

1. Keyphasor signal 2. Keyphasor I/O Module

3. 40 kΩ resistor

4. 100 µF capacitor 5. Keyphasor multiplier/divider 6. Typical I/O module 7. Simulated input signal 8. Function generator 9. Multimeter 10. Power supply

Figure 9-1: Test Equipment Setup For Radial Vibration Verification

9.2.2 Verification Screen Setup

1. Run the 3500 Rack Configuration Software on the test computer.

2. Choose Verification from the Utilities menu.

3. Choose the proper Slot number and Channel number.

4. Click on the Verify button.


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NOTE

Timed OK Channel Defeat is enabled for Radial Vibration channels. The channel will take 30 seconds to return to the OK

state from a Not OK condition.

9.3 Test Alarms The general test procedure for alarm setpoints is to use a function generator to simulate the vibration and Keyphasor signal. You test the alarm levels by varying the vibration signal (both peak-to-peak amplitude and dc voltage bias) and verifying that the Verification screen reports the correct results on the test computer. You need test only those alarm parameters that are configured and being used. The general test procedure to verify current alarm operation will include simulating a transducer input signal and varying this signal:

• to exceed over Alert/Alarm 1 and Danger/Alarm 2 Setpoints,

• to drop below any under Alert/Alarm 1 and Danger/Alarm 2 Setpoints, and

• to produce a non-alarm condition.

When varying the signal from an alarm condition to a non-alarm condition, you must consider alarm hysteresis. Adjust the signal well below the alarm setpoint to clear the alarm.

9.3.1 Direct

1. Disconnect the field wiring from the PWR, COM, and SIG channel terminals on the I/O module.

2. Connect the test equipment and run the software as described in Section 9.2, “Test Equipment and Software Setup”.

3. Set the Keyphasor multiplier/divider so that the value of the multiply setting is 001 and the value of the divide setting is 001.

4. Adjust the function generator amplitude below the Direct setpoint levels on the Direct bar graph display of the Verification screen.

5. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for Direct is green, and the Current Value field contains no alarm indication.

6. Adjust the function generator amplitude to just exceed the Direct Over Alert/Alarm 1 setpoint level. Wait for 2 or 3 seconds after the alarm time delay


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expires and verify that the color of the bar graph indicator for Direct changes from green to yellow and that the Current Value Field indicates an alarm.

7. Press the RESET switch on the RIM. Verify that the color of bar graph indicator for Direct remains yellow and that the Current Value Field still indicates an alarm.

8. Adjust the function generator amplitude to just exceed the Direct Over Danger/Alarm 2 setpoint level and wait for 2 or 3 seconds after the alarm time delay expires. Verify that the color of the bar graph indicator for Direct changes from yellow to red and that the Current Value Field indicates an alarm.

9. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for Direct remains red and that the Current Value Field still indicates an alarm.

10. Adjust the function generator amplitude below the Over Alarm setpoint levels. If the non-latching option is configured, verify that the color of the bar graph indicator for Direct changes to green and that the Current Value Box contains no indication of alarms. Press the RESET switch on the RIM to reset latching alarms.

11. If you can’t verify any configured alarm, check the configured setpoints again. If the monitor still does not alarm properly or fails any other part of this test, go to Section 5.6, ”If a Channel Fails a Verification Test”.

12. Disconnect the test equipment and reconnect the field wiring to the PWR, COM, and SIG channel terminals on the I/O module. Verify that the OK LED comes on and that the OK relay energizes. Press the RESET switch on the RIM to reset the OK LED.

13. Repeat steps 1 through 12 for all configured channels.

9.3.2 Gap



3. Adjust the power supply voltage to be within the Gap setpoint levels on the Gap bar graph display of the Verification screen.

4. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for Gap is green, and the Current Value field has no alarm indication.

5. Adjust the power supply voltage to just exceed the Gap Over Alert/Alarm 1 setpoint level and wait for 2 or 3 seconds after the alarm time delay expires.


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Verify that the color of the bar graph indicator for Gap changes from green to yellow and that the Current Value Field indicates an alarm.

6. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for Gap remains yellow and that the Current Value Field still indicates an alarm.

7. Adjust the power supply voltage to just exceed the Gap Over Danger/Alarm 2 setpoint level and wait for 2 or 3 seconds after the alarm time delay expires. Verify that the color of the bar graph indicator for Gap changes from yellow to red and that the Current Value Field indicates an alarm.

8. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for Gap remains red and that the Current Value Field still indicates an alarm.

9. Adjust the power supply voltage below the Over Alarm setpoint levels. If the non-latching option is configured, verify that the color of the bar graph indicator for Gap changes to green and that the Current Value Box contains no indication of alarms. Press the RESET switch on the RIM to reset latching alarms.

10. Repeat steps 5 through 9 to test the Under Alert/Alarm 1 and Under Danger/Alarm 2 setpoints by adjusting the power supply voltage to exceed the Under Alarm setpoint levels.

11. If you cannot verify any configured alarm, check the configured setpoints again. If the monitor still does not alarm properly or fails any other part of this test, go to Section 5.6, “If a Channel Fails a Verification Test”.



9.3.3 1X Amplitude (1X Ampl)


The Keyphasor signal must be triggering and have a valid rpm value for you to

check this parameter.


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3. Set the Keyphasor multiplier/divider so that the value of multiply setting is 001 and the value of the divide setting is 001.

4. Adjust the function generator amplitude within the 1X Ampl setpoint levels on the 1X Ampl bar graph display of the Verification screen.

5. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for 1X Ampl is green, and the Current Value field contains no alarm indication.

6. Adjust the function generator amplitude to just exceed the 1X Ampl Over Alert/Alarm 1 setpoint level and wait for 2 to 3 seconds after the alarm time delay expires. Verify that the color of the bar graph indicator for 1X Ampl changes from green to yellow and that the Current Value Field indicates an alarm.

7. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for 1X Ampl remains yellow and that the Current Value Field still indicates an alarm.

8. Adjust the function generator amplitude to just exceed the 1X Ampl Over Danger/Alarm 2 setpoint level and wait for 2 to 3 seconds after the alarm time delay expires. Verify that the color of the bar graph indicator for 1X Ampl changes from yellow to red and that the Current Value Field indicates an alarm.

9. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for 1X Ampl remains red and that the Current Value Field still indicates an alarm.

10. Adjust the function generator amplitude below the Over Alarm setpoint levels. If the non-latching option is configured, verify that the color of the bar graph indicator for 1X Ampl changes to green and that the Current Value Box contains no indication of alarms. Press the RESET switch on the RIM to reset latching alarms.

11. Repeat steps 3 through 10 to test the Under Alert/Alarm 1 and Under Danger/Alarm 2 setpoints by adjusting the function generator amplitude to exceed the Under Alarm setpoint levels.



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9.3.4 1X Phase



NOTE

If you cannot change the phase output, change the phase alarm setpoints to

activate the over and under phase alarms. You must download the setpoints to the

monitor for them to take effect.


4. Adjust the phase reading within the 1X Phase setpoint levels on the 1X Phase bar graph display of the Verification screen. Note that the 1X Amplitude must be a minimum of 42.7 mV to produce a valid 1X Phase reading.

5. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for 1X Phase is green, and the Current Value field contains no alarm indication.

6. Adjust the phase reading to just exceed the 1X Phase Over Alert/Alarm 1 setpoint level and wait for 2 or 3 seconds after the alarm time delay expires. Verify that the color of the bar graph indicator for 1X Phase changes from green to yellow and that the Current Value Field indicates an alarm.

7. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for 1X Phase remains yellow and that the Current Value Field still indicates an alarm.

8. Adjust the phase reading to just exceed the 1X Phase Over Danger/Alarm 2 setpoint level and wait for 2 or 3 seconds after the alarm time delay expires.


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Verify that the color of the bar graph indicator for 1X Phase changes from yellow to red and that the Current Value Field indicates an alarm.

9. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for 1X Phase remains red and that the Current Value Field still indicates an alarm.

10. Adjust the phase reading below the Over Alarm setpoint levels. If the non-latching option is configured, verify that the color of the bar graph indicator for 1X Phase changes to green and that the Current Value Box contains no indication of alarms. Press the RESET switch on the RIM to reset latching alarms.

11. Repeat steps 3 through 10 to test the Under Alert/Alarm 1 and Under Danger/Alarm 2 setpoints by adjusting the phase reading to exceed the Under Alarm setpoint levels.












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5. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for 2X Ampl is green, and the Current Value field has no alarm indication.

6. Adjust the function generator amplitude to just exceed the 2X Ampl Over Alert/Alarm 1 setpoint level and wait 2 or 3 seconds after the alarm time delay expires. Verify that the color of the bar graph indicator for 2X Ampl changes from green to yellow and that the Current Value Field indicates an alarm.


8. Adjust the function generator amplitude to just exceed the 2X Ampl Over Danger/Alarm 2 setpoint level and wait for 2 or 3 seconds after the alarm time delay expires. Verify that the color of the bar graph indicator for 2X Ampl changes from yellow to red and that the Current Value Field indicates an alarm.







9.3.6 2X Phase



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NOTE


activate the over and under phase alarms. You must download the setpoints to the


3. Set the Keyphasor multiplier/divider so that the value of the multiply setting is 001 and the divide setting is 002.

4. Adjust the phase reading within the 2X Phase setpoint levels on the 2X Phase bar graph display of the Verification screen. Note that the 2X Amplitude must be a minimum of 42.7 mV to produce a valid 2X Phase reading.

5. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for 2X Phase is green, and the Current Value field has no alarm indication.

6. Adjust the phase to just exceed the 2X Phase Over Alert/Alarm 1 setpoint level and wait for 2 or 3 seconds after the alarm time delay. Verify that the color of the bar graph indicator for 2X Phase changes from green to yellow and that the Current Value Field indicates an alarm.


8. Adjust the phase reading to just exceed the 2X Phase Over Danger/Alarm 2 setpoint level and wait for 2 or 3 seconds after the alarm time delay expires. Verify that the color of the bar graph indicator for 2X Phase changes from yellow to red and that the Current Value Field indicates an alarm.




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9.3.7 Not 1X Amplitude (Not 1X)







4. Adjust the function generator amplitude below the Not 1X setpoint levels on the Not 1X bar graph display of the Verification screen.

5. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for Not 1X is green, and the Current Value field has no alarm indication.

6. Adjust the function generator amplitude to just exceed the Not 1X Over Alert/Alarm 1 setpoint level and wait for 2 or 3 seconds after the alarm time delay expires. Verify that the color of the bar graph indicator for Not 1X changes from green to yellow and that the Current Value Field indicates an alarm.


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7. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for Not 1X remains yellow and that the Current Value Field still indicates an alarm.

8. Adjust the function generator amplitude to just exceed the Not 1X Over Danger/Alarm 2 setpoint level and wait for 2 or 3 seconds after the alarm time delay expires. Verify that the color of the bar graph indicator for Not 1X changes from yellow to red and that the Current Value Field indicates an alarm.

9. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for Not 1X remains red and that the Current Value Field still indicates an alarm.

10. Adjust the function generator amplitude below the Over Alarm setpoint levels. If the non-latching option is configured, verify that the color of the bar graph indicator for Not 1X changes to green and that the Current Value Box contains no indication of alarms. Press the RESET switch on the RIM to reset latching alarms.




9.3.8 Smax Amplitude




1. Disconnect the field wiring from the PWR, COM, and SIG channel pair terminals on the I/O module.

2. Connect the test equipment and run the software as described in Section 9.2, “Test Equipment and Software Setup”. Smax requires input connections to both channel 1 and 2 or channel 3 and 4.


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3. Adjust the function generator amplitude below the Smax setpoint levels on the Smax bar graph display of the Verification screen.

4. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for Smax is green, and the Current Value field has no alarm indication.

5. Adjust the function generator amplitude to just exceed the Smax Over Alert/Alarm 1 setpoint level and wait for 2 or 3 seconds after the alarm time delay expires. Verify that the color of the bar graph indicator for Smax changes from green to yellow and that the Current Value Field indicates an alarm.

6. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for Smax remains yellow and that the Current Value Field still indicates an alarm.

7. Adjust the function generator amplitude to just exceed the Smax Over Danger/Alarm 2 setpoint level and wait for 2 or 3 seconds after the alarm time delay expires. Verify that the color of the bar graph indicator for Smax changes from yellow to red and that the Current Value Field indicates an alarm.

8. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for Smax remains red and that the Current Value Field still indicates an alarm.

9. Adjust the function generator amplitude below the Over Alarm setpoint levels. If the non-latching option is configured, verify that the color of the bar graph indicator for Smax changes to green and that the Current Value Box contains no indication of alarms. Press the RESET switch on the RIM to reset latching alarms.


11. Disconnect the test equipment and reconnect the field wiring to the PWR, COM, and SIG channel pair terminals on the I/O module. Verify that the OK LED comes on and that the OK relay energizes. Press the RESET switch on the RIM to reset the OK LED.


9.4 Verify Channel Values The general test procedure for channel values is to use a function generator to simulate the vibration and Keyphasor input signal. You verify the output values by varying the input vibration signal level (both peak-to-peak amplitude and dc voltage bias) and verifying that the Verification screen reports the correct results on the test computer.


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NOTE

These parameters have an accuracy specification of ±1% of full scale for

amplitude and ±3º for phase.

9.4.1 Direct



3. Use the equation and examples shown below to calculate the full-scale voltage. Adjust the amplitude of the function generator to the calculated voltage.


Use the Transducer Scale Factor displayed in the Scale Factor Box on the

Verification Screen.

Full Scale Voltage = Direct Meter Top Scale × Transducer Scale Factor

Example 1:

Direct Meter Top Scale = 10 mil

Transducer Scale Factor = 200 mV/mil = 0.200 V/mil

Full Scale = (10 mils × 0.200 V/mil)

= 2.000 Vpk-pk

For Vrms input:

Vrms = (0.707/2) × (Vpk-pk), for a sine wave input

= (0.707/2) × (2.000 Vpk-pk)

= 0.707 Vrms


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Example 2:

Direct Meter Top Scale = 200 µm

Transducer Scale Factor = 7.874 V/mm

= 0.007874 V/µm

Full Scale = (200 µm × 0.007874 V/µm)

= 1.5748 Vpk-pk

For Vrms input:


= (0.707/2) × (1.574 Vpk-pk)

= 0.5566 Vrms

4. Set the Keyphasor multiplier/divider so that the value of the multiply setting is 001 and the divide setting is 001. Verify that the Direct bar graph display and Current Value Box readings are within ±1% of full scale.

5. If the readings do not meet specifications, verify that the input signal is correct. If the monitor still does not meet specifications or fails any other part of this test, go to Section 5.6, “If a Channel Fails a Verification Test”.

6. Disconnect the test equipment and reconnect the field wiring to the PWR, COM, and SIG channel terminals on the I/O module. Verify that the OK LED comes on and that the OK relay energizes. Press the RESET switch on the Rack Interface Module (RIM) to reset the OK LED.


9.4.2 Gap



If Gap is configured to read in volts:

3. Adjust the power supply voltage to -18.00 Vdc on the Gap bar graph display. Verify that the Gap bar graph display and Current Value Box readings are within ±1% of -18.00 Vdc.


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4. Adjust the power supply voltage to mid-scale on the Gap bar graph display. Verify that the Gap bar graph display and Current Value Box readings are within ±1% of the mid-scale value.

5. Go to step 10.

If Gap is configured to read in displacement units:

6. Use the examples and equations shown below to calculate the full-scale and bottom-scale voltages.




Gap Full-Scale = Gap Zero Position Volts + (Gap Meter Top Scale × Transducer Scale Factor)

Example 1: Transducer Scale Factor = 200 mV/mil = 0.200 V/mil Gap = 15-0-15 mil Gap Top Scale = 15 mil Gap Zero Position Volts = -9.75 Vdc Gap Full Scale input = -9.75 Vdc + (15 mils × 0.200 mV/mil) = -6.75 Vdc

Example 2: Transducer Scale Factor = 7.874 V/mm = 0.007874 V/µm Gap = 300-0-300 µm Gap Top Scale = 300 µm Gap Zero Position Volts = -9.75 Vdc Gap Full Scale input = -9.75 Vdc + (300 mils × 0.007874 V/µm) = -7.3878 Vdc

Gap Bottom-Scale = Gap Zero Position Volts - (Gap Meter Bottom Scale × Transducer Scale Factor)

Example 1:


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Transducer Scale Factor = 200 mV/mil Gap = 15-0-15 mil Gap Bottom Scale = 15 mil Gap Zero Position Volts = -9.75 Vdc Gap Bottom Scale input = -9.75 Vdc - (15 mils × 0.200 V/mil) = -12.75 Vdc

Example 2: Transducer Scale Factor = 7.874 V/mm = 0.007874 V/µm Gap = 300-0-300 µm Gap Bottom Scale = 300 µm Gap Zero Position Volts = -9.75 Vdc Gap Bottom Scale input = -9.75 Vdc - (300 mils × 0.007874 V/µm)

= -12.1122 Vdc

7. Adjust the power supply voltage to match the voltage displayed in the Gap Zero Position Volts Box. The Gap bar graph display and Current Value Box should both read 0 mil (0 mm) ±1%.

8. Adjust the power supply voltage to top scale (from step 6) on the Gap bar graph display. Verify that the Gap bar graph display and Current Value Box readings are within ±1 % of top scale.

9. Adjust the power supply voltage to bottom scale (from step 6) on the Gap bar graph display. Verify that the Gap bar graph display and Current Value Box readings are within ±1% of bottom scale.

10. If the readings do not meet specification, verify that the input signal is correct. If the monitor still does not meet specifications or fails any other part of this test, go to Section 5.6, “If a Channel Fails a Verification Test”.




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3. Use the equation and examples shown below to calculate the full-scale voltage. Adjust the function generator amplitude to the calculated voltage.




Full Scale Voltage = 1X Ampl Meter Top Scale X Transducer Scale Factor

Example 1:

1X Ampl Meter Top Scale = 10 mil

Transducer Scale Factor = 200 mV/mil

= 0.200 V/mil

Full Scale = (10 mil × 0.200 V/mil)

= 2.00 Vpk-pk

For Vrms input:


= (0.707/2) × (2.00 Vpk-pk)

= 0.707 Vrms


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Example 2:

1X Ampl Meter Top Scale = 200 µm


= 0.007874 V/µm

Full Scale = (200 µm × 0.007874 Vpk-pk/µm)

= 1.5748 Vpk-pk

For Vrms input:


= (0.707/2) × (1.574 Vpk-pk)

= 0.5566 Vrms

4. Set the Keyphasor multiplier/divider so that the value of the multiply setting is 001 and the value of the divide setting is 001. Verify that the 1X Ampl bar graph display and Current Value Box readings are within ±1% of full scale.




9.4.4 1X Phase

If your test equipment cannot change the phase output to a known value, use the procedure in Section 9.4.4.1, “If Your Test Equipment Cannot Change the 1X Phase Output”. If your test equipment can change the phase output to a known value, use the procedure in Section 9.4.4.2, ”If Your Test Equipment Can Change the 1X Phase Output”.

9.4.4.1 If Your Test Equipment Cannot Change the 1X Phase Output



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2. Connect the test equipment and run the software as described in Section 9.2, ”Test Equipment and Software Setup”.


4. Attach one channel of a 2-channel oscilloscope to the vibration signal buffered output and attach the other channel to the associated Keyphasor signal buffered output to observe both signals simultaneously.

5. Measure the phase. Measure 1X Phase from the leading edge of the Keyphasor pulse to the first positive peak of the vibration signal. Refer to Figure 9-2, which illustrates a phase of 45°. Verify that the 1X Phase bar graph display and Current Value Box readings are approximately what you measured. Note that 1X means 1 cycle of vibration signal per shaft revolution.

1. 1X vibration signal 2. Keyphasor signal 3. Time

4. 0° 5. One cycle

6. 360°

7. Phase lag = 45°

Figure 9-2: 1X Phase Measurement Example for 45º Phase Lag




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9.4.4.2 If Your Test Equipment Can Change the 1X Phase Output

If your test equipment can change the phase output to a known value, use the following verification procedure.




4. Adjust the phase reading for mid-scale. Verify that the 1X Phase bar graph display and Current Value Box readings are within ±1.5% of mid-scale.












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Full Scale Voltage = 2X Ampl Meter Top Scale × Transducer Scale Factor

Example 1:

2X Ampl Meter Top Scale = 10 mil


= 0.200 V/mil


= 2.00 Vpk-pk

For Vrms input:


= (0.707/2) × (2.00 Vpk-pk)

= 0.707 Vrms

Example 2:

2X Ampl Meter Top Scale = 200 µm


= 0.007874 V/µm

Full Scale = (200 mil × 0.007874 V/µm)

= 1.5748 Vpk-pk

For Vrms input:



96

= (0.707/2) × (1.574 Vpk-pk)

= 0.5566 Vrms

4. Set the Keyphasor multiplier/divider so that the value of the multiply setting is 001 and the value of the divide setting is 002. Verify that the 2X Ampl bar graph display and Current Value Box readings are within ±1% of full scale.




9.4.6 2X Phase

If your test equipment cannot change the 2X phase output to a known value, use the procedure in Section 9.4.6.1, “If Your Test Equipment Cannot Change the 2X Phase Output”. If your test equipment can change the phase output to a known value, use the procedure in Section 9.4.6.2, “If Your Test Equipment Can Change the 2X Phase Output”.

9.4.6.1 If Your Test Equipment Cannot Change the 2X Phase Output


2. Connect the test equipment and run the software as described in Section 9.2, “Test Equipment and Software Setup”. Set the Keyphasor multiplier/divider so that the value of the multiply setting is 001 and the value of the divide setting is 002.

3. Attach one channel of the 2-channel oscilloscope to the vibration signal buffered output and attach the other channel to the associated Keyphasor signal buffered output to observe both signals simultaneously.

4. Measure the phase. Measure 2X Phase from the leading edge of the Keyphasor pulse to the first positive peak of the vibration signal. Refer to Figure 9-3 which illustrates a phase of 90°. Verify that the 2X Phase bar graph display and Current Value Box read approximately what you measured. Note that 2X indicates 2 cycles of vibration signal per shaft revolution.


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1. 0° 2. First cycle 3. One shaft revolution 4. Second cycle 5. 2X vibration signal

6. Phase lag = 90° 7. Keyphasor signal

8. 360° 9. Time

Figure 9-3: 2X Phase Measurement Example for 90º Phase Lag



9.4.6.2 If Your Test Equipment Can Change the 2X Phase Output

If your test equipment can change the phase output to a known value, use the following procedure.


2. Connect the test equipment and run the software as described in Section 9.2, “Test Equipment and Software Setup”. Set the Keyphasor multiplier/divider so that the value of the multiply setting is 001 and the value of the divide setting is 002.

3. Adjust the phase reading for mid-scale. Verify that the 2X Phase bar graph display and Current Value Box readings are within ±1.5% of mid-scale.


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4. If the readings do not meet specifications, verify that the input signal is correct. If the monitor still does not meet specifications and/or fails any other part of this test, go to Section 5.6, “If a Channel Fails a Verification Test”.



9.4.7 Not 1X Amplitude






3. Use the equation and example shown below to calculate the full-scale voltage. Adjust the function generator amplitude to the calculated voltage.




Full-Scale Voltage =Not 1X Ampl Meter Top Scale × Transducer Scale Factor

Example 1:

Not 1X Ampl Meter Top Scale = 10 mil



99

= 0.200 V/mil


= 2.00 Vpk-pk

For Vrms input:

Vrms = (0.707/2) × (Vpk-pk) for a sine wave input

= (0.707/2) × (2.00 Vpk-pk)

= 0.707 Vrms

Example 2:

Not 1X Ampl Meter Top Scale = 200 µm


= 0.007874 V/µm

Full Scale = (200 µm × 0.007874 V/µm)

= 1.5748 Vpk-pk

For Vrms input:


= (0.707/2) × (1.574 Vpk-pk)

= 0.5566 Vrms

4. Set the Keyphasor multiplier/divider so that the value of the multiply setting is 001 and the value of the divide setting is 002. Verify that the Not 1X bar graph display and Current Value Box readings are within ±1% of full scale.





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9.4.8 Smax Amplitude




1. Disconnect the field wiring from the PWR, COM, and SIG channel pair terminals on the I/O module.

2. Connect the test equipment and run the software as described in Section 9.2, “Test Equipment and Software Setup”. Smax requires input connections to both channel 1 and 2 or to channel 3 and 4.

3. Use the equation and examples shown below to calculate the full-scale voltage.




Full-Scale Voltage = (Smax Meter Top Scale × Transducer Scale Factor) × 1.414

Example 1:

Smax Meter Top Scale = 10 mil


= 0.200 V/mil

Full Scale = (10 mil × 0.200 V/mil) × 1.414

= 2.828 Vpk-pk

For Vrms input:



101

= (0.707/2) × (2.828 Vpk-pk)

= 0.999 Vrms

Example 2:

Smax Meter Top Scale = 200 µm


= 0.007874 V/µm

Full Scale = (200 µm × .007874 V/µm) × 1.414

= 2.227 Vpk-pk

For Vrms input:


= (0.707/2) × (2.227 Vpk-pk)

= 0.787 Vrms

4. Set the Keyphasor multiplier/divider so that the value of the multiply setting is 001 and the values of the divide setting is 001.

5. Adjust the function generator amplitude for full scale. Verify that the Smax bar graph display and Current Value Box readings are within ±1% of full scale.


7. Disconnect the test equipment and reconnect the field wiring to the PWR, COM, and SIG channel pair terminals on the I/O module. Verify that the OK LED comes on and that the OK relay energizes. Press the RESET switch on the Rack Interface Module (RIM) to reset the OK LED.


9.4.9 Test OK Limits

The general approach for testing OK limits is for you to input a dc voltage and adjust the voltage above the Upper OK Limit and below the Lower OK Limit. This will produce a channel Not OK condition and cause the OK Relay to change state (de-energize). The test computer displays the Upper and Lower OK Limits are displayed in the Verification screen.


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3. Bypass all other configured channels.

4. Adjust the power supply voltage to -7.00 Vdc.

5. Press the RESET switch on the Rack Interface Module (RIM). Verify that the monitor OK LED is on and that the Channel OK State line in the Channel Status box of the Verification screen reads OK.

NOTE

If the Danger Bypass is active, then the BYPASS LED will be on. All other

channels in the rack must be OK or bypassed for the OK relay to energize.

6. Verify that the OK relay on the Rack Interface I/O Module indicates an OK state (energized). Refer to the 3500/20 Rack Interface Module Operation and Maintenance Manual (part number 129768-01).

7. Increase the power supply voltage (more negative) until the OK LED just goes off (upper limit). Verify that the Channel OK State line in the Channel Status box reads Not OK and that the OK Relay indicates Not OK. Verify that the Verification screen displays an Upper OK Limit voltage that is equal to or more positive than the input voltage.

8. Decrease the power supply voltage (less negative) to -7.00 Vdc.

9. Press the RESET switch on the RIM. Verify that the OK LED comes back on and that the OK relay energizes. Verify that the Channel OK State line in the Channel Status box reads OK.

10. Gradually decrease the power supply voltage (less negative) until the OK LED just goes off (lower limit). Verify that the Channel OK State line in the Channel Status box reads Not OK and that the OK Relay indicates Not OK. Verify that Verification screen displays a Lower OK Limit voltage that is equal to or more negative than the input voltage.

11. Increase the power supply voltage (more negative) to -7.00 Vdc.


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12. Press the RESET switch on the RIM. Verify that the OK LED comes back on, the OK relay energizes, and the Channel OK State line in the Channel Status box reads OK.

13. If you cannot verify any configured OK limit, go to Section 5.6, “If a Channel Fails a Verification Test”.

14. Disconnect the test equipment and reconnect the field wiring to the PWR, COM, and SIG channel terminals on the I/O module. Press the RESET switch on the RIM and verify that the OK LED comes on and that the OK relay energizes.


16. Return the bypass switches for all configured channels back to their original settings.

Table 9-3: Radial Vibration Transducer OK Limits (Assume ±50 mV accuracy for check tolerance)

Transducer Type Lower OK Limit (V) Upper OK Limit (V)

7200 5mm with barriers -2.7 to -2.8 -16.7 to –16.8

7200 8mm with barriers -2.7 to -2.8 -16.7 to -16.8

7200 5mm without barriers -2.7 to -2.8 -16.7 to –16.8

7200 8mm without barriers -2.7 to -2.8 -16.7 to -16.8





3300 XL 8mm with barriers -2.7 to -2.8 -16.7 to -16.8



3300 XL 8mm without barriers -2.7 to -2.8 -16.7 to -16.8

3000 (-18 V) without barriers -2.4 to -2.5 -12.0 to -12.1

3000 (-24 V) without barriers -3.2 to -3.3 -15.7 to -15.8

3300 RAM without barriers -2.4 to -2.5 -12.5 to -12.6

3300 RAM with barriers -2.4 to -2.5 -12.1 to -12.2

3300 16mm HTPS without barriers -2.7 to -2.8 -16.7 to -16.8

Section 10 - Thrust Position General Information

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10. Thrust Position General Information Thrust position, a measure of the position or change in position of a rotor in axial direction with respect to the thrust bearing, lets you monitor the wear of the thrust collar of a rotor.

In a 3500 Monitoring System, you program the Thrust Position channels in pairs. These channels, depending on configuration, typically condition the input signals into various parameters called “proportional values”. You can configure Alert setpoints for each active proportional value and can configure Danger setpoints for any 2 of the active proportional values.

Section 11 - Thrust Position Configuration

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11. Thrust Position Configuration 11.1 Introduction

This section discusses the configuration considerations and the 3500 Rack Configuration Software screens that are associated with the Thrust Position Channel.

11.2 Configuration Considerations Consider the following items before you configure a Thrust Position channel:

• 7200 11mm or 14mm, 3000 Proximitor, and 3300 16mm HTPS sensors do not currently support Internal Barrier I/O Modules.

• Because an extreme Thrust Position movement can exceed the OK limits of the transducer, a transducer Not OK event on a Thrust Position channel will not inhibit alarming on that channel.

• The configuration software automatically selects the "No Keyphasor" option for this channel type. This channel type requires no Keyphasor signals.

• The Thrust Direct full-scale range depends on the transducer type.

• The Zero Position voltage range depends on the direct full-scale range and the upscale direction.

• You must configure monitors in channel pairs (for example, you may configure Channels 1 and 2 as Thrust Position and Channels 3 and 4 as Radial Vibration).


• If you select a Non-standard transducer, the configuration software sets the setpoint OK limits to ±1 volt from the selected Upper and Lower OK Limits.

• There are 2 selections for 3000 Series transducers:

1) 3000(-24V) Proximitor. Select this option when you connect a 3000 Series Proximitor sensor directly to a 3500 monitor. The configuration software will select a default scale factor of 285 mV/mil. You may adjust this value ±15%. Note that the monitor does not compensate the buffered transducer signals on the front of the monitors and to the Data Manager and that you should interpret them at 285 mV/mil.


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2) 3000(-18V) Proximitor. Select this option when you connect a 3000 Series Proximitor sensor directly to a 3500 monitor, but supply power to Proximitor sensor from an external 18-volt source. The configuration software will select a default scale factor of 200 mV/mil. You may adjust this value ±15%. Note that the monitor does not compensate buffered transducer signals on the front of the monitors and to the Data Manager and that you should interpret them at 200 mV/mil.

11.3 Configuration Options This section describes the options that the Thrust Position Channel configuration screen provides.

Figure 11-1: Thrust Position Channel Configuration Screen



This returns the position of the transducer jumper on the I/O Module. Refer to Section Error! Reference source not found., “Error! Reference source not found.” for the function of this jumper.

11.3.1.2 CP Mod

Selecting the CP Mod button in the Channel Options Dialog Box allows you to download a Custom channel configuration to the monitor. The software stores the custom configuration data in a Custom Products Modification File. Custom Products Modification files follow the naming convention <modification #.mod>. You must place these files in the \3500\Rackcfg\Mods\ directory. When you


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select a CP Mod file, the software displays a window which describes the function of the modification. CP Mod files are available through Bently Nevada LLC’s Custom Products Division. Contact your local sales representative for details.

11.3.1.3 Zero Position (Direct)

This value represents the transducer dc voltage that corresponds to the zero indication on the channel's meter scale for the direct proportional value. The amount of adjustment that the software allows depends on the Direct Full Scale Range and the transducer OK limits. To maximize the zero adjustment, gap the transducer as closely as possible to the ideal zero position voltage based on the full-scale range, the transducer scale factor, and the upscale direction. For a mid-scale zero the ideal gap is the center of the range.



11.3.1.5 Normal Thrust Direction

This control determines whether the normal thrust direction (towards the active thrust bearing) is towards or away from the probe mounting. This field defines whether movement of the rotor toward or away from the thrust probe corresponds to a more positive thrust reading (for example upscale on a bar graph). If you select "Toward Probe", then movement of the rotor toward the thrust probe will cause the thrust position direct proportional value to increase and go upscale on a bar graph.


This value returns the position of the transducer jumper on the I/O Module. Refer to Section Error! Reference source not found., ”Error! Reference source not found.”, if applicable.



11.3.2.1 Channel


11.3.2.2 Slot

The value specifies the location of the monitor in the 3500 rack (2 through 15).


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11.3.2.3 Rack Type


11.3.3 Enable

11.3.3.1 Direct

Direct data represents the Average position, or change in position, of a rotor in the axial direction with respect to some fixed reference. You may display this value in mils or µm. This proportional value supports both center zero and non-center zero Full Scale Ranges.

Table 11-1: Direct Full-Scale Ranges by Transducer Type

3300 XL 8mm Proximitor Sensor 3300 5mm Proximitor Sensor 3500 8mm Proximitor Sensor 7200 5mm Proximitor Sensor 7200 8mm Proximitor Sensor

3300 XL 11mm Proximitor Sensor 7200 11mm Proximitor Sensor 7200 14mm Proximitor Sensor

3300 16mm HTPS Non-standard

3000 (-18V) Proximitor Sensor 3000 (-24V) Proximitor Sensor 3300 RAM Proximitor Sensor

25-0-25 mil 30-0-30 mil 40-0-40 mil

0.5 - 0 – 0.5 mm 1.0 - 0 – 1.0 mm

Custom

25-0-25 mil 30-0-30 mil 40-0-40 mil 50-0-50 mil 75-0-75 mil

0.5 - 0 - 0.5 mm 1.0 - 0 - 1.0 mm 2.0 - 0 - 2.0 mm

Custom

25-0-25 mil 0.5 - 0 - 0.5 mm

Custom

11.3.3.2 Gap

Gap is the physical distance between the face of a proximity probe tip and the observed surface. Gap expresses this distance in terms of voltage. Standard polarity convention dictates that a decreasing gap results in an increasing (less negative) output signal.

The Gap Full Scale Ranges are the same (-24V or Custom) for all transducer types.


This is the value to which a proportional value goes when some condition bypasses or defeats that channel. The selected value can be between the minimum and maximum full-scale range values. The monitor clamps only the values available from the Recorder Outputs, Communication Gateway and Display Interface Module to the specified value when the proportional value is invalid.


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This is the proportional value of a channel that the monitor sends to the 4 to 20 mA recorder. The recorder output is proportional to the measured value over the channel full scale range. An increase in the proportional value that a bar graph display would indicate as upscale will increase the current at the recorder output. If the channel is bypassed, the monitor will clamp the output to the selected clamp value (or to 2 mA if you select the 2 mA clamp option).

11.3.4 OK Mode

11.3.4.1 Latching

If you configure a channel for Latching OK, then once the channel has gone Not OK the status will remain Not OK until you use one the following methods to issue a reset:








If you configure a channel for Non-latching OK, the OK status of that channel will track the defined OK status of the transducer.

11.3.5 Delay


11.3.5.1 Alert

Alert is the first level alarm that occurs when the transducer signal level exceeds the selected Alert/Alarm 1 setpoint. You can set this setpoint on the Setpoint screen. The Alert time delay is always in 1-second increments (from 1 to 60) for all available proportional values.

11.3.5.2 Danger



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11.3.5.3 100 ms Option

The 100 ms (typical) option applies to only the Danger time delay and has the following effects:


• You can set the Danger time delay can be set in 1-second increments (from 1 through 60).

• You can set the Danger time delay for all available proportional values.


• The software set the Danger time delay to 100 ms.

• You can set the Danger time delay for only the primary proportional value.


11.3.6.1 Type

The following transducer types are available for the Thrust Position Channel with a non-barrier I/O module.

3300 Transducers






• 3300 16mm HTPS

7200 Transducers





3000 Transducers

• 3000 (-18V) Proximitor sensor

• 3000 (-24V) Proximitor sensor


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Non-standard

The following transducer types are available for the Thrust Position Channel with a barrier I/O module.

3300 Transducers






7200 Transducers



Non-standard


The Customize button adjusts the Scale Factor for transducers. Refer to Section 5.5, "Adjusting the Scale Factor and Zero Position". Also, note that:

• If you select “Non-standard” as the transducer type, you can also adjust the OK Limits.




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Table 11-2: Scale Factor by Transducer Type (±15% Adjustment Allowed)


With Bently Nevada™ Internal Barriers (mV/mil)

Standard I/O with Barriers

(mV/mil)

Discrete TMR I/O with Barriers (mV/mil)

Bussed TMR I/O with Barriers (mV/mil)

3300 XL 8mm 200 200 192 200 199

3300 5mm 200 200 192 200 199

3300 8mm 200 200 192 200 199

7200 5mm 200 200 192 200 199

7200 8mm 200 200 192 200 199

3300 XL 11mm 100 100 96 100 96

7200 11mm 100 Not supported Not supported Not supported Not supported

7200 14mm 100 Not supported Not supported Not supported Not supported

3000 (-18 V) 200 Not supported Not supported Not supported Not supported

3000 (-24 V) 285 Not supported Not supported Not supported Not supported

3300 RAM 200 200 192 200 199

3300 16mm HTPS 100 Not supported Not supported Not supported Not supported


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Table 11-3: OK Limits By Transducer Type

Upper OK Limit (V) Lower OK Limit (V) Center Gap Voltage (V) Transducer Type Without

Barriers With

Barriers Without Barriers

With Barriers

Without Barriers

With Barriers

3300 XL 8mm -19.04 -18.20 -1.28 -1.10 -10.16 -9.65

3300 XL 11mm -19.04 -18.20 -1.28 -1.10 (-1.28)

-10.16 -9.65 (-9.74)

3300 5mm -19.04 -18.20 -1.28 -1.10 -10.16 -9.65

3300 8mm -19.04 -18.20 -1.28 -1.10 -9.75 -9.75

7200 5mm -19.04 -18.20 -1.28 -1.10 -9.75 -9.75

7200 8mm -19.04 -18.20 -1.28 -1.10 -9.75 -9.75









3300 RAM -13.14 -12.35 -1.16 -1.05 (-1.16)

-7.15 -6.7

(-6.76)

3300 16mm HTPS -18.05 Not supported -1.65 Not


Note: values in parentheses are for Bently Nevada™ internal barrier I/O modules.

11.3.7 Alarm Mode


11.3.7.1 Latching








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11.3.8 Barriers

Barriers are devices that restrict the amount of energy that can flow into a hazardous area. Select the MTL 796(-) Zener External option or Galvanic Isolators if you will connect external safety barriers between the monitor and the transducer. If your application uses an Internal Barrier I/O Module, select the internal option.

11.4 Alarm Setpoints

11.4.1 Overview

This section specifies the available setpoints for each type of channel. A setpoint is the level within the full-scale range that determines when an alarm occurs. The 3500 Monitoring System allows you to set Alert/Alarm 1 setpoints for every proportional value on each channel. The channel will drive an Alert/Alarm 1 indication if 1 or more of the channel proportional values exceed their setpoints. The 3500 Monitoring System also allows you to set up to 4 Danger/Alarm 2 setpoints (2 over setpoints and 2 under setpoints) for up to 2 of the proportional values. You may select any 2 of the available proportional values for the channel.

NOTE

You can place the setpoint over and under limits only within the OK limits of

the specified transducer.

Use the Setpoint Configuration screen in the 3500 Rack Configuration Software (shown in Figure 11-3) to adjust Alert/Alarm 1 and Danger/Alarm 2 setpoints for a Thrust channel.


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Figure 11-3: Thrust Position Setpoint Configuration Screen


Table 11-4 lists the Alert/Alarm 1 and Danger/Alarm 2 setpoints that are available for the Thrust Position channel type. The Communication Gateway and Display Interface Modules use the setpoint number.

Table 11-4: Thrust Position Available Setpoints

Setpoint Number Thrust Position

1 Over Direct

2 Under Direct

3 Over Gap

4 Under Gap





The monitor provides all the Alert/Alarm 1 setpoints first, followed by the configured danger setpoints.

Example 1:

Radial Vibration with the Danger/Alarm 2 Over 2X Ampl setpoint and the Danger/Alarm 2 Under 2X Ampl setpoint selected.

Alert/Alarm 1 setpoints: Setpoints 1 through 13


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Danger/Alarm 2 setpoints: Setpoint 14 is Over 2X Ampl (Danger)

Setpoint 15 is Under 2X Ampl (Danger)

Example 2:

Thrust Position with the Danger/Alarm 2 Over Gap setpoint and the Danger/Alarm 2 Under Gap setpoint selected.

Alert/Alarm 1 setpoints: Setpoints 1 through 4

Danger/Alarm 2 setpoints: Setpoint 5 is Over Gap (Danger)

Setpoint 6 is Under Gap (Danger)

Section 12 - Differential Expansion General Information

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12. Differential Expansion General Information

Differential expansion, a measure of the axial position of the rotor with respect to the machine case, lets you monitor the thermal expansion or contraction of a rotor.

In a 3500 Monitoring System, you program Differential Expansion channels in pairs. These channels, depending on configuration, typically condition the input signals into various parameters called “proportional values”. You can configure Alert setpoints for each active proportional value and Danger setpoints for any 2 of the active proportional values.

Section 13 - Differential Expansion Configuration

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13. Differential Expansion Configuration 13.1 Introduction

This section discusses the configuration considerations and the 3500 Rack Configuration Software screens that are associated with the Differential Expansion Channel.

13.2 Configuration Considerations Consider the following items before you configure a Differential Expansion Channel:

• None of the differential expansion channel transducers can support discrete Internal Barrier I/O modules.

• The configuration software automatically selects the "No Keyphasor" option for this channel type. This channel type requires no Keyphasor signals.

• The Differential Expansion Direct full-scale range depends upon the transducer type.

• The Zero Position voltage range depends on the direct full-scale range.

• You must configure monitors in channel pairs (for example, you may configure Channels 1 and 2 as Differential Expansion and Channels 3 and 4 as Thrust Position).


• The Latching OK Mode and the Timed OK Channel Defeat options are not compatible.

• If you select a Non-standard transducer, the configuration software automatically sets the setpoint OK limits to ±1 volt from the selected Upper and Lower OK Limits.

13.3 Configuration Options This section describes the options that the Differential Expansion Channel configuration provides.


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Figure 13-1: Differential Expansion Channel Configuration Screen



This value represents the transducer dc voltage that corresponds to the zero indication on the channel's meter scale for the direct proportional value. The amount of adjustment allowed depends on the Direct Full Scale Range and the transducer OK limits. To maximize the zero adjustment, gap the transducer as closely as possible to the ideal zero position voltage based on the full-scale range, the transducer scale factor, and the upscale direction. For a mid-scale zero the ideal gap is the center of the range.



13.3.1.3 CP Mod

Selecting the CP Mod button in the Channel Options Dialog Box allows you to download a Custom channel configuration to the monitor. Custom configuration data is stored in a Custom Products Modification File. Custom Products Modification files follow the naming convention <modification #.mod>. You must place these files in the \3500\Rackcfg\Mods\ directory. When you select a CP Mod file, the software displays a window which describes the function of the modification. CP Mod files are available through Bently Nevada LLC's Custom Products Division. Contact your local sales representative for details.


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This value returns the position of the transducer jumper on the I/O Module. Refer to Section Error! Reference source not found., “Error! Reference source not found.” for the function of this jumper.



13.3.2.1 Channel


13.3.2.2 Slot

This value specifies the location of the monitor (2 through 15) in the 3500 rack.

13.3.2.3 Rack Type


13.3.3 Enable

13.3.3.1 Direct

Direct data indicates the change in position of the shaft due to the thermal growth relative to the machine casing. The software may display this value in inches or millimetres. This proportional value supports both center zero and non-center zero Full-Scale Ranges.


3300 XL 25mm Proximitor Sensor

25mm Extended Range Proximitor Sensor



Non-standard

5-0-5 mm 0-10 mm

0.25 - 0 - 0.25 in 0.0 - 0.5 in

Custom

5-0-5 mm 0-10 mm

10-0-10 mm 0-20 mm 0-25 mm

0.25 - 0 - 0.25 in 0.0 - 0.5 in

0.5 - 0 - 0.5 in 0.0 - 1.0 in

Custom


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13.3.3.2 Gap

Gap is the physical distance between the face of a proximity probe tip and the observed surface. Gap expresses the distance in terms of voltage. Standard polarity convention dictates that a decreasing gap results in an increasing (less negative) output signal.

The Gap Full Scale Ranges are the same (-24 Vdc or Custom) for all transducer types.


This Clamp Value is the value to which a proportional value goes when some condition bypasses or defeats that channel (for example, when the transducer experiences a problem). The selected value can be between the minimum and maximum full-scale range values. The monitor clamps only the values available from the Recorder Outputs, Communication Gateway and Display Interface Module to the specified value when the proportional value is invalid.


This is the proportional value of a channel that the monitor sends to the 4 to 20 mA recorder. The recorder output is proportional to the measured value over the channel full-scale range. An increase in the proportional value that a bar graph display would indicate as upscale will increase the current at the recorder output. If the channel is bypassed, the monitor will clamp the output to the selected clamp value (or to 2 mA if you select the 2 mA clamp option).

13.3.4 OK Mode

13.3.4.1 Latching

If you configure a channel for Latching OK, then once the channel has gone Not OK the status will stay Not OK until you use one of the following methods to reset it:








If you configure a channel for Non-latching OK, then the OK status of that channel will track the defined OK status of the transducer.


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13.3.5 Timed OK Channel Defeat

Timed OK Channel Defeat is an option that prevents a channel from returning to an OK state until that channel's transducer has remained in an OK state for the specified period of time. If you enable this option, the software sets the time to 10 seconds. This option protects against false trips that intermittent transducers can cause.

13.3.6 Delay


13.3.6.1 Alert

Alert is the first level alarm that occurs when the transducer signal level exceeds the selected Alert/Alarm 1 setpoint. You can set this setpoint on the Setpoint screen. The Alert time delay is always in 1-second increments (from 1 to 60) for all available proportional values.

13.3.6.2 Danger


13.3.6.3 100 ms Option



• You can set the Danger time delay at 1-second increments (from 1 to 60).

• You can set the Danger time delay for all available proportional values.


• The configuration software sets the Danger time delay to 100 ms.



13.3.7.1 Type

The following transducer types are available for the Differential Expansion Channel:



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• 25mm Extended Range Proximitor sensor



• Non-standard


The Customize button adjusts the Scale Factor for transducers. Refer to Section 5.5, “Adjusting the Scale Factor and Zero Position”. Also, note that:

• If you select Non-standard as the transducer type, you can also adjust the OK Limits.

• The Non-standard transducer's scale factor must be between 8.5 and 23 mV/mil.



Table 13-2: Scale Factor by Transducer Type (±15% Scale Factor Adjustment Allowed)


3300 XL 25mm Proximitor Sensor 20

25mm extended range Proximitor sensor 20




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Table 13-3: OK Limits by Transducer Type

Transducer Upper (V) Lower (V) Center Gap Voltage (V)

3300 XL 25mm Proximitor sensor -12.55 -1.35 -6.95

25mm extended range Proximitor sensor -12.55 -1.35 -6.95




This field returns the position of the transducer jumper on the I/O Module. Refer to Section Error! Reference source not found., “Error! Reference source not found.” for the function of this jumper.

13.3.8 Alarm Mode


13.3.8.1 Latching

Once a latching alarm is active, it will remain active even after the proportional value drops below the configured setpoint level. The channel will remain in alarm until you use one of the following methods to reset it:








When a non-latching alarm is active, it will go inactive as soon as the proportional value drops below the configured setpoint level


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13.3.9 Upscale Direction

This option determines whether the upscale direction is towards or away from the probe mounting. This field defines whether rotor movement toward or away from the differential expansion corresponds to a more positive differential expansion (for example, upscale on a bar graph). If you set this field to "Toward Probe", then movement of the rotor toward the differential expansion probe will cause the differential expansion direct proportional value to increase and go upscale on a bar graph.

13.4 Alarm Setpoints This section specifies the available setpoints for each type of channel. A setpoint is the level within the full-scale range that determines when an alarm occurs. The 3500 Monitoring System allows you to set Alert/Alarm 1 setpoints for every proportional value on each channel. The channel will drive an Alert/Alarm 1 indication if 1 or more of the channel proportional values exceed their setpoints. The 3500 Monitoring System also allows you to set up to 4 Danger/Alarm 2 setpoints (2 over setpoints and 2 under setpoints) for up to 2 of the proportional values. You may select any 2 of the available proportional values for the channel.

NOTE



Use the Setpoint Configuration screen in the 3500 Rack Configuration Software (shown in Figure 13-3) to adjust the Alert/Alarm 1 and Danger/Alarm 2 setpoints.


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Figure 13-3: Differential Expansion Setpoint Configuration Screen


Table 13-4 lists the Alert/Alarm 1 and Danger/Alarm 2 setpoints that are available for each channel pair type. The Communication Gateway and Display Interface Modules use the setpoint number.

Table 13-4: Differential Expansion Available Setpoints

Setpoint Number Differential Expansion

1 Over Direct

2 Under Direct

3 Over Gap

4 Under Gap






The alarming hysteresis for all channel configurations is 1/64 of full scale. When a channel exceeds an alarm setpoint, it must fall back the below the setpoint less the hysteresis before it can go out of alarm.


130

Example:


Section 14 - Thrust Position and Differential Expansion Verification

131

14. Thrust Position and Differential Expansion Verification

14.1 Introduction The following sections describe how to test alarms, verify channels, and test OK limits for channels configured as Thrust Position and Differential Expansion. You verify the output values and alarm setpoints by varying the input dc voltage from a power supply and verifying that the Verification screen reports the correct results on the test computer.

Table 14-1 shows the alarms that you can configure for the Thrust Position and Differential Expansion channels.

Table 14-1: Thrust Position and Differential Expansion Channel Alarms


Direct X X

Gap X X

14.2 Test Equipment and Software Setup You can use the following test equipment and software setup as the initial setup that all the Thrust Position and Differential Expansion channel verification procedures (Test Alarms, Verify Channels, and Test OK Limits) require.

14.2.1 Required Test Equipment

The verification procedures in this section require the following test equipment.

• Single-channel power supply

• 4-1/2 digit multimeter

DANGER

High voltage present. Contact with high voltage can cause shock, burns, or death. Do not touch exposed wires or terminals.


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1. Test levels will exceed alarm setpoint levels and activate alarms. This could result in a relay contact state change.

2. Disconnecting field wiring will cause a Not OK condition.


Connect the power supply and multimeter to the COM and SIG terminals of Channel 1 as shown in Figure 14-1 to simulate the transducer signal. The test equipment outputs should be floating relative to earth ground.

Figure 14-1: Test Equipment Setup




3. Choose the proper Slot number and Channel number



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14.3 Test Alarms The general test procedure for alarm setpoints is to use a power supply to simulate the Thrust Position and Differential Expansion signal. You test the alarm levels by varying the dc voltage and verifying that the Verification screen reports the correct results on the test computer. You need test only those alarm parameters that are configured and being used. The general test procedure to verify current alarm operation will include simulating a transducer input signal and varying this signal:




14.3.1 Direct


2. Connect the test equipment and run the software as described in Section 14.2, "Test Equipment and Software Setup".

3. Adjust the power supply voltage to within the Direct setpoint levels on the Direct bar graph display of the Verification screen.

4. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for Direct is green, and the Current Value field has no alarm indication.

5. Adjust the power supply voltage to just exceed the Direct Over Alert/Alarm 1 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for Direct changes from green to yellow and that the Current Value Field indicates an alarm.

6. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for Direct remains yellow and that the Current Value Field still indicates an alarm.

7. Adjust the power supply voltage to just exceed the Direct Over Danger/Alarm 2 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for Direct changes from yellow to red and that the Current Value Field indicates an alarm.


9. Adjust the power supply voltage below the Over Alarm setpoint levels. If the non-latching option is configured, verify that the color of the bar graph


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indicator for Direct changes to green and that the Current Value Box contains no indication of alarms. Press the RESET switch on the RIM to reset latching alarms.


11. If you cannot verify any configured alarm, re-check the configured setpoints. If the monitor still does not alarm properly or fails any other part of this test, go to Section 5.6, “If a Channel Fails a Verification Test”.



14.3.2 Gap



3. Adjust the power supply voltage to within the Gap setpoint levels on the Gap bar graph display.


5. Adjust the power supply voltage to just exceed the Gap Over Alert/Alarm 1 setpoint level. Wait for 2 or 3 seconds until the alarm time delay expires and verify that the color of the bar graph indicator for Gap changes from green to yellow and that the Current Value Field indicates an alarm.

6. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for Gap remains yellow and that the Current Field still indicates an alarm.

7. Adjust the power supply voltage to just exceed the Gap Over Danger/Alarm 2 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for Gap changes from yellow to red and that the Current Value Field indicates an alarm.



135



11. If you cannot verify any configured alarm, re-check the configured setpoints. If the monitor still does not alarm properly or fails any other part of this test, go to Section 5.6, "If a Channel Fails a Verification Test".



14.4 Verify Channel Values The general test procedure for these parameters is to use a power supply to simulate the Thrust Position and Differential Expansion signal. You verify the output values by varying the input dc voltage and verifying that the Verification screen reports the correct results on the test computer.

14.4.1 Direct



3. Calculate the full-scale and bottom scale values. You can calculate these values using the following equation:

Full-scale Value

= Zero Position Voltage + (Transducer Scale Factor x Scale Range)

Bottom Scale Value

= Zero Position Voltage - (Transducer Scale Factor × Scale Range)

If Upscale direction (Normal for Thrust, Long for Differential Expansion) is toward the probe:

Full Scale = (Zero Position Voltage) + (Transducer Scale Factor × Top Meter Scale)


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Bottom Scale = (Zero Position Voltage) - (Transducer Scale Factor × ABS (Bottom Meter Scale)

Example 1:

Transducer scale factor = 200 mV/mil

Meter scale range = 25-0-25 mil

Zero Position Voltage = -9.75 Vdc

Full-scale Value = (-9.75 Vdc) + (0.200 V/mil × 25 mils)

= -4.75 Vdc

Bottom Scale Value = (-9.75 V) - (0.200 V/mil × 25 mils)

= -14.75 Vdc

Example 2:

Transducer scale factor = 7.874 V/mm

Meter scale range = 1-0-1 mm


Full-scale Value = (-10.16 Vdc) + (7.874 V/mm × 1 mm)

= -2.286 Vdc

Bottom Scale Value = (-10.16 Vdc) - (7.874 V/mm × 1 mm)

= -18.03 Vdc

If Upscale direction (Normal for Thrust, Long for Differential Expansion) is away from the probe:

Full Scale = (Zero Position Voltage) - (Transducer Scale Factor × Top Meter Scale)

Bottom Scale = (Zero Position Voltage) + (Transducer Scale Factor × ABS(Bottom Meter Scale)

Example 1:

Transducer scale factor = 200 mV/mil

Meter scale range = 25-0-25 mil


Full-scale Value = (-9.75 Vdc) - (0.200 V/mil × 25 mils)

= -14.75 Vdc


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Bottom Scale Value = (-9.75 Vdc) + (0.200 V/mil × 25 mils)

= -4.75 Vdc

Example 2:

Transducer scale factor = 7.874 V/mm

Meter scale range = 1-0-1 mm


Full-Scale Value = (-10.16 Vdc) - (7.874 V/mm × 1 mm)

= -18.03 Vdc

Bottom Scale Value = (-10.16 Vdc) + (7.874 V/mm × 1 mm)

= -2.286 Vdc

4. Adjust the power supply voltage to match the voltage displayed in the Z.P. Volts box. The Direct bar graph display and the Current Value Box should read 0 mil (0 mm) ±1%.

5. Adjust the power supply voltage for the calculated full scale. Verify that the Direct bar graph display and the Current Value Box are reading ±1% of full scale.

6. Adjust the power supply voltage for the calculated bottom scale. Verify that the Direct bar graph display and the Current Value Box are reading ±1% of bottom scale.




14.4.2 Gap


2. Connect the test equipment and run the software as described in Section 14.2, “Receiving and Handling Instructions”.


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3. Adjust the power supply to -18.00 Vdc on the Gap bar graph display. Verify that the Gap bar graph display and the Current Value Box are reading ±1% of -18.00 Vdc.

4. Adjust the power supply voltage to mid-scale on the Gap bar graph display. Verify that the Gap bar graph and Current Value Box are reading ±1% of the mid-scale value.




14.5 Test OK Limits The general procedure for testing OK limits is to input a dc voltage and adjust it above the Upper OK Limit and below the Lower OK Limit. This will produce a channel Not OK condition and cause the OK Relay to change state (de-energize). The Verification screen displays the Upper and Lower OK Limits on the test computer.

1. Disconnect the field wiring from PWR, COM, and SIG channel terminals on the I/O module.





NOTE

If the Danger Bypass has been activated, then the BYPASS LED will be on. All other

channels in the rack must be OK or bypassed for the OK relay to be energized.


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6. Verify that the OK relay on the Rack Interface I/O Module indicates OK (is energized). See the 3500/20 Rack Interface Module Operation and Maintenance Manual (part number 129768-01)




10. Gradually decrease the power supply voltage (less negative) until the OK LED just goes off (lower limit). Verify that the Channel OK State line in the Channel Status box reads Not OK and that the OK Relay indicates Not OK. Verify that the Verification screen displays a Lower OK Limit voltage that is equal to or more negative than the input voltage.




14. Disconnect the test equipment and reconnect the field wiring to the PWR, COM, and SIG channel terminals on the monitor I/O module. Press the RESET switch on the RIM and verify that the OK LED comes on and that the OK relay energizes.


16. Return the bypass switches for all configured channels to their original setting.


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Table 14-2: Thrust Position Default OK Limits (assume ±50 mV accuracy for check tolerance)

Transducer Lower OK Limit (V) Upper OK Limit (V)




3300 8 mm without barriers -1.23 to -1.33 -18.99 to -19.09

3300 XL 8mm with Bently Nevada internal barrier I/O modules -1.23 to -1.33 -18.15 to -18.25

3300 XL 11mm with Bently Nevada internal barrier I/O modules -1.23 to -1.33 -18.15 to -18.25

3300 5mm with Bently Nevada internal barrier I/O modules -1.23 to -1.33 -18.15 to -18.25

3300 8mm with Bently Nevada internal barrier I/O modules -1.23 to -1.33 -18.15 to -18.25


3300 XL 11 mm with barriers -1.05 to -1.15 -18.15 to -18.25







7200 5mm with Bently Nevada internal barrier I/O modules -1.23 to –1.33 -18.15 to –18.25

7200 8mm with Bently Nevada internal barrier I/O modules -1.23 to –1.33 -18.15 to –18.25



3000 (-18V) without barriers -1.11 to -1.21 -13.09 to -13.19

3000 (-24V) without barriers -2.2 to -2.3 -16.8 to -16.9

3300 RAM without barriers -1.11 to -1.21 -13.09 to -13.19

3300 RAM with Bently Nevada internal barrier I/O modules -1.11 to –1.21 -12.3 to –12.4

3300 RAM with barriers -1.0 to -1.1 -12.3 to -12.4



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Table 14-3: Differential Expansion Default OK Limits (assume ±50 mV accuracy for check tolerance)


25mm extender range Proximitor sensor without barriers -1.30 to -1.40 -12.5 to -12.6

35mm extended range Proximitor sensor without barriers -1.30 to -1.40 -12.5 to -12.6

50mm extended range Proximitor sensor without barriers -1.30 to -1.40 -12.5 to -12.6

Section 15 - Eccentricity General Information

143

15. Eccentricity General Information The Eccentricity channel type measures the amount of shaft bow. The shaft bow may be due to:

1) fixed mechanical bow,

2) temporary thermal bow, or

3) temporary bow due to any sort of sag or bow at rest, sometimes called gravity bow.

In a 3500 Monitoring System, you program the eccentricity channels in pairs. These channels, depending on configuration, typically condition the input signals into various parameters called “proportional values”. You can configure Alert setpoints for each active proportional value and Danger setpoints for any 2 of the active proportional values.

Section 16 - Eccentricity Configuration

145

16. Eccentricity Configuration 16.1 Introduction

This section discusses the configuration considerations and the 3500 Rack Configuration Software screens that are associated with the Eccentricity Channel.

16.2 Configuration Considerations Consider the following items before you configure an Eccentricity Channel:

• 7200 11mm or 14mm, 3000 Proximitor, 3300 16mm HTPS, and 3300 RAM sensors do not currently support internal barrier I/O modules.

• If you select a Keyphasor channel, you must install a Keyphasor Module in the rack.

• The full-scale options that each proportional value allows depend on the transducer type.

• 7200 11mm, 14mm, or 3300 16mm HTPS sensors do not currently support external barriers.

• You must configure monitors in channel pairs (for example, you may configure Channels 1 and 2 as Eccentricity and Channels 3 and 4 as Thrust Position).


• Selecting “No Keyphasor” on the 4-Channel Monitor screen will disable the peak-to-peak proportional value.

• The Latching OK Mode and the Timed OK Channel Defeat options are not compatible.

• If you select a Non-standard transducer, then the software sets the setpoint OK limits to ±1 volt from the selected Upper and Lower OK Limits.

16.3 Configuration Options This section describes the options available on the Eccentricity Channel configuration screen.


146

Figure 16-1: Eccentricity Channel Configuration Screen


16.3.1.1 CP Mod

This button in the Channel Options Dialog Box allows you to download a Custom channel configuration to the monitor. The software stores the custom configuration data in a Custom Products Modification File. Custom Products Modification files follow the naming convention <modification #.mod>. You must place these files in the \3500\Rackcfg\Mods\ directory. When you select a CP Mod file, the software displays a window which describes the function of the modification. CP Mod files are available through Bently Nevada LLC's Custom Products Division. Contact your local sales representative for details.


This value represents the transducer dc voltage that corresponds to the zero indication on the channel's meter scale for the direct proportional value. The amount of adjustment that the software allows depends on the Direct Full Scale Range and the transducer OK limits. To maximize the zero adjustment, gap the probe as closely as possible to the center gap voltage that is specified in


147

Table 16-4.




This value returns the position of the Transducer Jumper on the I/O Module. Refer to Section Error! Reference source not found., “Error! Reference source not found.”, if applicable.



16.3.2.1 Channel

This value specifies the number of the channel being configured (1 through 4).

16.3.2.2 Slot


16.3.2.3 Rack Type


16.3.3 Enable

16.3.3.1 Peak-to-Peak

The value returns the difference between the positive and the negative extremes of the rotor bow. The proportional value is available only when you select a Keyphasor channel. You may display this value in mils or µm.

Table 16-1: Peak-to-Peak Full-Scale Ranges by Transducer Type

3300 XL 8mm Proximitor Sensor 3300 5mm Proximitor Sensor 3300 8mm Proximitor Sensor 7200 5mm Proximitor Sensor

7200 8mm Proximitor

3300 XL 11mm Proximitor Sensor 7200 11mm Proximitor Sensor 7200 14mm Proximitor Sensor


0-5 mil pk-pk 0-5 mil pk-pk


148

0-10 mil pk-pk 0-20 mil pk-pk 0-30 mil pk-pk

0-100 µm pk-pk 0-200 µm pk-pk 0-500 µm pk-pk

Custom

0-10 mil pk-pk 0-20 mil pk-pk 0-30 mil pk-pk 0-50 mil pk-pk

0-100 µm pk-pk 0-200 µm pk-pk 0-500 µm pk-pk

0-1000 µm pk-pk Custom

16.3.3.2 Direct

This value is the instantaneous eccentricity value. You can display the direct value in 1 of 3 ways:

• For shaft rotative speeds greater than 600 rpm, the direct value is the average distance between the probe tip and the shaft and the software displays its value in a way similar to that for a thrust measurement. The software displays this direct measurement only when you enable Direct Channel Above 600 RPM.

• For shaft rotative speeds between 600 rpm and the rpm setting for Instantaneous Crossover, the direct measurement consists of 2 values: a maximum value and a minimum value relative to a zero reference. These 2 direct values are called Direct Max and Direct Min.

• For shaft rotative speeds less than the rpm setting for Instantaneous Crossover, Direct Max and Direct Min are equal and the direct measurement consists of an instantaneous measurement relative to a zero reference. This type of direct measurement is called instantaneous gap.


3300 XL 8 mm Proximitor Sensor 3300 5mm Proximitor Sensor 3300 8 mm Proximitor Sensor 7200 5mm Proximitor Sensor 7200 8mm Proximitor Sensor

3300 XL 11 mm Proximitor Sensor 7200 11mm Proximitor Sensor 7200 14mm Proximitor Sensor


5-0-5 mil 10-0-10 mil 20-0-20 mil 30-0-30 mil

100-0-100 µm 200-0-200 µm 500-0-500 µm

5-0-5 mil 10-0-10 mil 20-0-20 mil 30-0-30 mil 50-0-50 mil

100-0-100 µm 200-0-200 µm


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Custom 500-0-500 µm 1000-0-1000 µm

Custom

16.3.3.3 Gap

This value is the physical distance between the face of a proximity probe tip and the observed surface. Gap expresses this distance in terms of voltage. Standard polarity convention dictates that a decreasing gap results in an increasing (less negative) output signal.

The Gap Full Scale Ranges are the same (-24 Vdc and Custom) for all transducer types.


The Clamp Value is the value to which a proportional value goes when that channel or proportional value is bypassed or defeated (for example, when the transducer experiences a problem). The selected value can be between the minimum and maximum full-scale range values. The system clamps only the values available from the Recorder Outputs, Communication Gateway and Display Interface Module to the specified value when the proportional value is invalid.


This value is the proportional value of a channel that the monitor sends to the 4 to 20 mA recorder. The recorder output is proportional to the measured value over the channel full-scale range. An increase in the proportional value that a bar graph display would indicate as upscale will increase the current at the recorder output. If the channel is bypassed, then the monitor will clamp the output to the selected clamp value (or to 2 mA if you select the 2 mA clamp option).

16.3.4 Delay

Delay is the time for which a proportional value must remain at or above an over alarm level or below an under alarm level before the monitor declares an alarm as active.

16.3.4.1 Alert

Alert is the first level alarm that occurs when the transducer signal level exceeds the selected Alert/Alarm 1 setpoint. You can set this setpoint on the Setpoint screen. The Alert time delay is always set in 1-second increments (from 1 to 60) for all available proportional values.


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16.3.4.2 Danger


16.3.4.3 100 ms Option



• You can set the Danger time delay in 1-second increments (from 1 to 60).

• You can set the Danger time delay for any 2 available proportional values.




16.3.5 Instantaneous Crossover

Instantaneous crossover is the shaft-rotative speed value at which the direct eccentricity measurement changes from Direct Max/Direct Min to instantaneous gap. The value for Instantaneous Crossover must be between 1 and 10 rpm.

16.3.6 Direct Channel Above 600 RPM

16.3.6.1 Disabled

When you select Disabled for this control, the software will disable display and alarming of the Direct proportional value when the shaft rotative speed exceeds 600 rpm.

16.3.6.2 Enabled

When you select Enabled for this control the display and alarming of the Direct proportional value will remain active when the shaft rotative speed exceeds 600 rpm.


16.3.7.1 Type

The following transducer types are available for the Eccentricity Channel with a non-barrier I/O module.

3300 Transducers


151





• 3300 16mm HTPS

7200 Transducers





Non-standard

The following transducer types are available for the Eccentricity Channel with a barrier I/O module.

3300 Transducers





7200 Transducers



Non-standard


You used this button to adjust the Scale Factor for transducers. Refer to Section 5.5, “Adjusting the Scale Factor and Zero Position”. Also, note that:





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Table 16-3: Scale Factor by Transducer Type (±15% scale factor adjustment allowed)


With Bently Nevada Internal Barriers (mV/mil)

Standard I/O with Barriers (mV/mil)

Discrete TMR I/O

with Barriers (mV/mil)

Bussed TMR I/O with Barriers (mV/mil)

3300 XL 8mm 200 200 192 200 199

3300 5mm 200 200 192 200 199

3300 8mm 200 200 192 200 199

7200 5mm 200 200 192 200 199

7200 8mm 200 200 192 200 199

3300 XL 11mm 100 100 96 100 96

7200 11mm 100 Not supported

Not supported

Not supported

Not supported

7200 14mm 100

3300 16mm HTPS 100 Not supported

Not supported

Not supported

Not supported


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Table 16-4: OK Limits by Transducer Type (With Barriers Includes Bently Nevada Internal Barrier I/O Modules)

Transducer Type Upper

Without Barriers (V)

Upper with Barriers (V)

Lower Without

Barriers (V)

Lower With Barriers (V)

Center Gap Voltage Without

Barriers (V)

Center Gap Voltage

With Barriers (V)

3300 XL 8mm -16.75 V -16.75 V -2.75 V -2.75 V -9.75 V -9.75 V

3300 XL 11mm -16.75 V -16.75 V -2.75 V -2.75 V -9.75 V -9.75 V

3300 8mm -16.75 V -16.75 V -2.75 V -2.75 V -9.75 V -9.75 V

3300 5mm -16.75 V -16.75 V -2.75 V -2.75 V -9.75 V -9.75 V

7200 5mm -16.75 V -16.75 V -2.75 V -2.75 V -9.75 V -9.75 V

7200 8mm -16.75 V -16.75 V -2.75 V -2.75 V -9.75 V -9.75 V

7200 11mm -19.65 V Not supported -3.55 V Not

supported -11.60 V Not supported

7200 14mm -16.75 V Not supported -2.75 V Not


3300 16mm HTPS -16.75 V Not supported -2.75 V Not



This value returns the position of the Transducer Jumper on the I/O Module. Refer to Section Error! Reference source not found., “Error! Reference source not found.” for the function of this jumper.

16.3.8 Alarm Mode


16.3.8.1 Latching

Once a latching alarm is active, it will remain active even after the proportional value drops below the configured setpoint level. The channel will remain in alarm until you use one of the following methods to reset it:








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When a non-latching alarm is active, it will go inactive as soon as the proportional value drops below the configured setpoint level.

16.3.9 Barriers


16.3.10 OK Mode

16.3.10.1 Latching

If you configure a channel for Latching OK, then once the channel has gone Not OK the status will stay Not OK until you use one of the following methods to reset it:








If you configure a channel for Non-latching OK, then the OK status of that channel will track the defined OK status of the transducer.

16.3.11 Timed OK Channel Defeat

Timed OK Channel Defeat is an option that prevents a channel from returning to an OK status until the transducer for that channel has remained in an OK state for the specified period of time. If you enable this option, the software sets the time to 60 seconds. The option protects against false trips that intermittent transducers can cause.

16.4 Alarm Setpoints This section specifies the available setpoints for each type of channel. A setpoint is the level within the full-scale range that determines when an alarm occurs. The 3500 Monitoring System allows you to set Alert/Alarm 1 setpoints for every


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proportional value on each channel. The channel will drive an Alert/Alarm 1 indication if 1 or more of the channel proportional values exceed their setpoints. The 3500 Monitoring System also allows you to set up to 4 Danger/Alarm 2 setpoints (2 over setpoints and 2 under setpoints) for up to 2 of the proportional values. You may select any 2 of the available proportional values for the channel.




Use the Setpoint Configuration screen in the 3500 Rack Configuration Software (shown in Figure 16-3) to adjust Alert/Alarm 1 and Danger/Alarm 2 setpoints for an Eccentricity channel.

Figure 16-3: Eccentricity Channel Setpoint Configuration Screen



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Table 16-5 lists the Alert/Alarm 1 and Danger/Alarm 2 setpoints available for each channel pair type. The Communication Gateway and Display Interface Modules use the setpoint number.


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Table 16-5: Eccentricity Available Setpoints

Setpoint Number Eccentricity

1 Over Peak-to-Peak

2 Over Gap

3 Under Gap

4 Over Direct Max

5 Under Direct Max

6 Over Direct Min

7 Under Direct Min






The alarming hysteresis for all channel configurations is 1/64th of Full Scale. When a channel exceeds an alarm setpoint, it must fall back below the setpoint less the hysteresis before it can go out of alarm.

Example:


Section 17 - Eccentricity Verification

159

17. Eccentricity Verification 17.1 Introduction

The following sections describe how to test alarms, verify channels, and test OK limits for channels configured as Eccentricity. You verify the output values and alarm setpoints by varying the input Eccentricity signal level (both peak to peak amplitude and dc voltage bias) and verifying that the Verification screen reports the correct results on the test computer.

You can configure Eccentricity channels for the channel values and alarms shown in Table 17-1:

Table 17-1: Eccentricity Channel Values and Alarms


Peak-to-Peak X

Gap X X

Direct X X

17.2 Test Equipment and Software Setup You can use the following test equipment and software setup as the initial setup that all the Eccentricity channel verification procedures (Test Alarms, Verify Channels, and Test OK Limits) require.

DANGER

High voltage present. Contact with high voltages could cause shock, burns, or death. Do not touch exposed wires or

terminals.


160


1. Tests will exceed alarm setpoint levels and activate alarms. This could result in a relay contact state change.



Connect the power supply, function generator and multimeter to COM and SIG of channel 1 with the polarity as shown in to simulate the transducer signal. The test equipment outputs should be floating relative to earth ground.

12 3

4

5 6 7

1. Multimeter 2. Power supply 3. Function generator 4. I/O module 5. Keyphasor I/O module 6. 40 kΩ resistor 7. 100 µF capacitor

Figure 17-1: Eccentricity Test Setup


161

Set the test equipment as specified in Table 17-2.

Table 17-2: Test Equipment Settings

Power Supply Function Generator






3. Choose the proper Slot number and Channel number


Note that if the Timed OK Channel Defeat is enabled, the OK LED will not come on immediately after you connect the test equipment. A channel will take 60 seconds to return to the OK status from Not OK. If the OK mode is configured for latching, press the RESET button on the Rack Interface Module (RIM) to return to the OK status.

17.3 Test Alarms The general procedure for testing alarm setpoints is to use a function generator and power supply to simulate the eccentricity signal. You test the alarm levels by varying the output from the test equipment and verifying that the Verification screen reports the correct results on the test computer. You need test only those alarm parameters that are configured and being used. The general test procedure to verify current alarm operation will include simulating a transducer input signal and varying this signal




17.3.1 Peak-to-Peak



162


3. Adjust the function generator amplitude such that the signal level does not exceed any setpoint value for the peak-to-peak mil bar graph.

4. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for peak-to-peak is green, and the Current Value field has no alarm indication.

5. Adjust the function generator amplitude to just exceed the peak-to-peak Over Alert/Alarm 1 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for peak-to-peak changes from green to yellow and that the Current Value Field indicates an alarm.

6. Press the RESET switch on the RIM. Verify that the bar graph indicator for peak-to-peak remains yellow and that the Current Value Field still indicates an alarm.

7. Adjust the function generator amplitude to just exceed the peak-to-peak Over Danger/Alarm 2 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for peak-to-peak changes from yellow to red and that the Current Value Field indicates an alarm.

8. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for peak-to-peak remains red and that the Current Value Field still indicates an alarm.

9. Adjust the function generator amplitude below the Over Alarm setpoint levels. If the non-latching option is configured, verify that the color of the bar graph indicator for peak-to-peak changes to green and that the Current Value Box contains no indication of alarms. Press the RESET switch on the RIM to reset latching alarms.




17.3.2 Gap



163


3. Adjust the power supply voltage to within the Gap setpoint levels on the Gap bar graph display of the Verification screen.

4. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for Gap is green, and the Current Value still has no alarm indication.

5. Adjust the power supply voltage to just exceed the Gap Over Alert/Alarm 1 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for Gap changes from green to yellow and that the Current Value Field indicates an alarm.










164

17.3.3 Direct




1. Disconnect field wiring from the PWR, COM, and SIG channel terminals on the I/O module.


3. Adjust the power supply voltage to within the Direct setpoint levels on the Direct bar graph display of the Verification screen.

4. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for Direct is green, and the Current Value field has no alarm indication.

5. Adjust the power supply voltage to just exceed the Direct Over Alert/Alarm 1 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for Direct changes from green to yellow and that the Current Value Field indicates an alarm.


7. Adjust the power supply voltage to just exceed the Direct Over Danger/Alarm 2 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for Direct changes from yellow to red and that the Current Value Field indicates an alarm.


9. Adjust the power supply voltage below the Over Alarm setpoint levels. If the non-latching option is configured, verify that the color of the bar graph indicator for Direct changes to green and that the Current Value Box contains no indication of alarms. Press the RESET switch on the RIM to reset latching alarms.


165


11. If you cannot verify any configured alarm, re-check the configured setpoints. If the monitor still does not alarm properly or fails any other part of this test, go to Section 5.6, “Receiving and Handling Instructions”.



17.4 Verify Channel Values The general procedure for testing these parameters is to simulate the eccentricity signal with a function generator and power supply. You verify the output levels by varying the output from the test equipment and verifying that the Verification screen reports the correct results on the test computer.

17.4.1 Peak-to-Peak


Most DMMs are not designed to measure low frequency ac

signals. We recommend that you use an oscilloscope.



3. Calculate the full-scale voltage according to the following equation and examples.

Verification Input Signal

= Peak to Peak Meter Full-scale × Transducer Scale Factor


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Example 1: Peak-to-Peak Meter Top Scale = 10 mil Transducer Scale Factor = 200 mV/mil = 0.200 V/mil Full Scale = (10 mils × 0.200 V/mil) = 2.00 Vpk-pk For Vrms input:

Vrms = (0.707/2) × (Vpk-pk) for a sine wave input = (0.707/2) × (2.00 Vpk-pk) = 0.707 Vrms

Example 2:

Peak to Peak Meter Top Scale = 200 µm Transducer Scale Factor = 7.874 V/mm

= 0.007874 V/µm Full Scale = (200 µm × 0.007874 V/µm)

= 1.575 Vpk-pk For Vrms input:

Vrms = (0.707/2) × (Vpk-pk), for a sine wave input = (0.707/2) × (1.575 Vpk-pk) = 0.5568 Vrms

4. Adjust the function generator amplitude for the calculated full scale. Verify that the peak-to-peak bar graph display and the Current Value Box are reading ±1% of full scale.





167

17.4.2 Gap



3. Adjust the power supply voltage to -18.00 Vdc on the Gap bar graph display. Verify that the Gap bar graph display and the Current Value Box are reading ±1% of -18.00 Vdc.

4. Adjust the power supply voltage to mid-scale on the Gap bar graph display. Verify that the Gap bar graph display and Current Value Box are reading ±1% of the mid-scale value.




17.4.3 Direct






3. Calculate the full-scale and bottom-scale values. You can calculate these values in the following way:

Full / Bottom Scale Value = Zero Position Voltage ± (Transducer Scale Factor × Scale Range)


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Full Scale = (Zero Position Voltage) - (Transducer Scale Factor × Top Meter Scale)

Bottom Scale = (Zero Position Voltage) + (Transducer Scale Factor × ABS (Bottom Meter Scale))

The Zero Position Voltage is the voltage input that will cause the reading on the bar graph display and the Current Value Box to be zero. The Zero Position Voltage value is displayed in the Z.P. Volts box above each channel value bar graph. The Transducer Scale Factor is displayed in the Scale Factor Box on the Verification screen.

Example 1: Transducer scale factor = 200 mV/mil = 0.200 V/mil Scale range = 20-0-20 mil Zero Position Voltage = -9.75 Vdc Full-Scale Value = (-9.75 Vdc) - (0.200 V/mil × 20 mil) = -13.75 Vdc Bottom-Scale Value = (-9.75 Vdc) + (0.200 V/mil × 20 mil) = -5.75 Vdc Example 2: Transducer scale factor = 7,874 mV/mm = 0.007874 V/µm Meter scale range = 200-0-200 µm Zero Position Voltage = -9.75 Vdc Full-Scale Value = (-9.75 Vdc) - (0.007874 V/µm× 200 µm) = -11.32 Vdc Bottom-Scale Value = (-9.75 Vdc) + (0.007874 V/µm × 200 µm) = -8.18 Vdc

4. Adjust the power supply voltage to match the voltage displayed in the Z.P. Volts Box. The Direct bar graph display and the Current Value Box should read 0 mil (0 mm) ± 1%.

5. Adjust the power supply voltage for full scale. Verify that the Max value in the Current Value Box (the value on the left of the divider bar) is reading ±1% of full scale.

6. Adjust the power supply voltage for bottom scale. Verify that the Min value in the Current Value Box (the value on the right of the divider bar) is reading ±1% of bottom scale.


169

7. If the reading does not meet specifications, verify that the input signal is correct. If the monitor still does not meet specifications or fails any other part of this test, go to Section 5.6, “If a Channel Fails a Verification Test”.

8. Disconnect the power supply and multimeter and reconnect the field wiring to the PWR, COM, and SIG channel terminals on the I/O module. Verify that the OK LED comes on and that the OK relay energizes. Press the RESET switch on the Rack Interface Module (RIM) to reset the OK LED.


17.5 Test OK Limits The general procedure for testing OK limits is to input a dc voltage and adjust it above the Upper OK Limit and below the Lower OK Limit. This will produce a channel Not OK condition and cause the OK Relay to change state (de-energize). The Verification screen on the test computer displays the Upper and Lower OK Limits.







If the Danger Bypass has been activated, then the BYPASS LED will be on. All other channels in the rack must be OK or bypassed for the relay to be

energized.

6. Verify that the OK relay on the Rack Interface I/O Module indicates OK (energized). See the 3500/20 Rack Interface Module Operation and Maintenance Manual (part number 129768-01).


170




10. Gradually decrease the power supply voltage (less negative) until the OK LED just goes off (lower limit). Verify that the Channel OK State line in the Channel Status box reads Not OK and that the OK Relay indicates Not OK. Verify that the Verification screen displays a Lower OK Limit voltage that is equal to or more negative than the input voltage.




14. Disconnect the test equipment and reconnect the field wiring to the PWR, COM, and SIG channel 1 terminals on the monitor I/O module. Press the RESET switch on the RIM and verify that the OK LED comes on and that the OK relay energizes.


16. Return the bypass switch for all configured channels back to their original setting.


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Table 17-3: Eccentricity Default OK Limits Table (assume ±50 mV accuracy for check tolerance)

Transducer Lower OK Limit (V) Upper OK Limit (V)




3300 8 mm with barriers -2.70 to -2.80 -16.70 to -16.80












Section 18 - REBAM General Information

173

18. REBAM® Channel General Information Major features of the Rolling Element Bearing Activity Monitor (REBAM®) channel type are:

• Using a high-pass filter to implement a “spike” region to monitor the bearing's condition.

• Using a bandpass filter centered about the element pass frequency to monitoring the loading of the bearing.

• Using a low-pass filter setting that relates to the nominal machine speed and provides 1X amplitude and phase information to monitor rotor-related issues such as balance and alignment.

• Adjusting the filter settings based on the current machine speed to monitor variable-speed machines.

In a 3500 Monitoring System, you program REBAM channels. These channels, depending on configuration, typically condition the input signals into various parameters called “proportional values”. These values, together with a Keyphasor signal, provide phase measurements.

The channels also provide setpoints that you can use for alarming. You can configure Alert setpoints for each active proportional value and Danger setpoints for any 2 of the active proportional values.

Section 19 - REBAM Configuration

175

19. REBAM Channel Configuration 19.1 Introduction

This section discusses the configuration considerations and the 3500 Rack Configuration Software screens that are associated with the REBAM channel.

19.2 Configuration Considerations Consider the following items before configuring a REBAM Channel:

• When you select "No Keyphasor", you cannot enable the 1X Amplitude (Ampl) and Phase Lag values.

• When you select "No Keyphasor", you cannot enable the filter Stepping/Tracking feature.

• If you select a Keyphasor channel, then you must install a Keyphasor module in the rack.

• You can enable the 1X Phase value only if you configure the selected Keyphasor channel for an events per revolution value equal to 1.

• If you select a Non-standard transducer, the software sets the setpoint OK limits to ±1 volt from the selected Upper and Lower OK Limits.

• You may set setpoints only on enabled proportional values.

• You must configure monitors in channel pairs (for example, you may configure Channels 1 and 2 as REBAM channels and Channels 3 and 4 as Thrust Position).

• Some configurations, typically those for the higher speed machines, will allow you to enable only 1 channel of a channel pair. Refer to Section 21.3, “Signal Conditioning”.


• The REBAM channel type does not support TMR configurations.

19.3 General Options This section describes the general options that the REBAM Channel configuration screen provides.


176

Figure 19-1: REBAM Channel Type Configuration Screen



19.3.1.1 Channel

This value specifies the number of the channel being configured (1 through 4).

19.3.1.2 Slot


19.3.1.3 Rack Type


19.3.1.4 Help Assistant

Select this button to turn on the context-sensitive Help system. Select the button again to turn the Help system off.


177


19.3.2.1 Units

This button allows you to use either English or Metric units of measure to view and configure the channel parameters.

19.3.2.2 CP Mod

Selecting the CP Mod button opens the Channel Options Dialog Box that allows you to download a Custom channel configuration to the monitor. The software stores Custom configuration data in a Custom Products Modification File. Custom Products Modification files follow the naming convention <modification #.mod>. You must place these files in the \3500\Rackcfg\Mods\ directory. When you select a CP Mod file, the software displays a window which describes the function of the modification. CP Mod files are available through Bently Nevada LLC's Custom Products Division. Contact your local sales representative for details.

19.4 Channel Configuration Tab This section describes the options that the Channel Configuration tab offers.

Figure 19-2: REBAM Channel Configuration Tab


178

19.4.1 Trip Multiply

The Trip Multiply value temporarily increases the alarm (Alert and Danger) setpoint values. Manual (operator) action normally applies this value during startup to allow a machine to pass through high vibration speed ranges without monitor alarm indications. Such high vibration speed ranges may include system resonances and other normal transient vibrations.

19.4.2 Transducer Jumper Status (on I/O Module)

This value returns the position of the Transducer Jumper on the I/O Module. Refer to Section Error! Reference source not found., “Error! Reference source not found.”, if applicable.

19.4.3 Enable

An enabled proportional value specifies that the channel will provide the value ( enabled, disabled).

19.4.3.1 Spike

Spike is a high-pass filtered value that contains the high frequency content of the input signal. This value is generally associated with the condition of the bearing.

19.4.3.2 Element

Element is a band-passed filtered value that contains the signal content of the Element Pass Frequency (Outer Race). This value is generally associated with the loading of the bearing.

19.4.3.3 Rotor

Rotor is a low-pass filtered value that applications generally use to monitor rotor-related issues, such as misalignment and unbalance issues.

19.4.3.4 Direct

Direct is wide-band data that represents the overall peak-to-peak vibration.

19.4.3.5 Gap

Gap is the physical distance between the face of a proximity probe tip and the observed surface. Gap expresses this distance in terms of voltage. Standard polarity convention dictates that a decreasing gap results in an increasing (less negative) output signal.

19.4.3.6 1X Ampl

In a complex vibration signal, 1X Ampl denotes the amplitude component that occurs at the rotor rotative speed frequency.


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In a complex vibration signal, 1X Phase Lag denotes the phase lag component that occurs at the rotor rotative speed frequency.

19.4.3.8 Full Scale Range

All proportional values except Gap support a full scale value. If the desired full scale value is not in the pull down list, then you can choose the custom selection. The full scale range for Gap is always 0 to –24 Vdc. The values in Table 19-1 are the same for all transducer types.

Table 19-1: REBAM Proportional Value Full-Scale Ranges

Full Scale Range

(µin pk-pk)

Full Scale Range

(µm pk-pk) Spike Element Rotor Direct 1X Ampl

0 to 50 0 to 1 X X

0 to 100 0 to 2 X X X X X

0 to 200 0 to 5 X X X X X

0 to 500 0 to 10 X X X X X

0 to 1000 0 to 20 X X X X X

0 to 2000 o to 50 X X X X

0 to 3000 o to 75 X X X X


The Clamp Value is the value to which a proportional value goes when that channel or proportional value is bypassed or defeated (for example, when a transducer experiences a problem). The selected value can be between the minimum and maximum full-scale range values, although 1X and 2X Phase Lag have available values of 0 to 359 degrees. The monitor clamps only the values available from the Recorder Outputs, Communication Gateway and Display Interface Module to the specified value when the proportional value is invalid.


This is the proportional value of a channel that the monitor sends to the 4 to 20 mA recorder. The recorder output is proportional to the measured value over the channel full scale range. An increase in the proportional value that a bar graph display would as upscale will increase the current at the recorder output.

You cannot select 1X Phase Lag as a recorder output.


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19.4.4 Delay

Delay is the time for which a proportional value must remain at or above an over alarm level or below an under alarm level before the monitor declares an alarm as active.

19.4.4.1 Alert

Alert is the first level alarm that occurs when the transducer signal level exceeds the selected Alert/Alarm 1 setpoint. You can set this setpoint on the Setpoint screen and adjust the time delay in 1-second increments. The minimum value that the configuration software allows depends on the current configuration of the REBAM channel.

19.4.4.2 Danger

Danger is the second level alarm that occurs when the transducer signal level exceeds the selected Danger/Alarm 2 setpoint. You can set this setpoint on the Setpoint screen and adjust the time delay in 0.5-second increments. The minimum value that the configuration software allows depends on the current configuration of the REBAM channel.

267 ms option: The 267 ms option applies only to the Danger time delay. The value of 267 ms is based on the current configuration of the REBAM channel and has the following results:


• You can set the Danger time delay in 0.5-second increments (up to 400).

• You can set the Danger setpoints for up to 2 proportional values.



• You can set Danger setpoints for only 1 proportional value.


19.4.5.1 Type

The following transducer types are available for the REBAM Channel.

3300 Transducers

• 3300 MicroProx® 40 mV/µm sensor

• 3300 MicroProx 80 mV/µm sensor

7200 Transducers

• 7200 MicroProx 80 mV/µm sensor


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Non-standard

19.4.5.2 Customize button

You use this button to adjust the Scale Factor for transducers. Refer to Section 5.5, “Adjusting the Scale Factor and Zero Position”. Also, note that:





Table 19-2: Scale Factors Transducer Type (±15% scale factor adjustment allowed)


With Bently Nevada Internal Barriers

(mV/mil)

Standard I/O With External Barriers

(mV/mil)

3300 MicroProx 40 mV/µm 1000 1000 960

3300 MicroProx 80 mV/µm 2000 2000 1919

7200 MicroProx 80 mV/µm 2000 2000 1919


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Table 19-3: OK Limits by Transducer Type (“With Barriers” includes Bently Nevada Internal Barrier I/O Modules)

Transducer Type Upper OK

Limit Without Barriers (V)

Upper OK Limit With Barriers (V)

Lower OK Limit Without

Barriers (V)

Lower OK Limit With Barriers (V)

3300 MicroProx 40 mV/µm -17.00 -17.00 -1.00 -1.00

3300 MicroProx 80 mV/µm -17.00 -17.00 -1.00 -1.00

7200 MicroProx 80 mV/µm -19.00 -19.00 -3.00 -3.00

19.4.6 Alarm Mode


19.4.6.1 Latching










19.4.7 Transducer Orientation

Degrees

This value specifies the location of the transducer on the machine. The range for the orientation angle is 0 to 180 degrees left or right as observed from the driver to the driven end of the machine train. Figure 19-4 shows orientation angles for a horizontal shaft.


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1. Shaft 2. Driver end 3. Driven end

4. 0°

5. 90° right

6. 180°

7. 90° left

Figure 19-4: Transducer Orientation Angles

19.4.8 Barriers


19.5 Bearing Configuration Tab This section describes the options available on the Channel Configuration tab.


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Figure 19-5: REBAM Bearing Configuration Screen

The following table summarizes the required entries for each of the 3 methods for entering the bearing configuration. If you provide all the required information for either Accurate or Estimated, then the software will calculate various bearing frequencies and select appropriate filter settings.

Table 19-4: Bearing Configuration Parameters

Method Shaft Speed Number of Elements

Bearing Diameter

Element Diameter

Contact Angle

Estimation Factor

Accurate X X X X X

Estimated X X X

Unknown X

19.5.1 Shaft Speed

Enter the nominal speed (in rpm) of the shaft to which this bearing applies. The nominal shaft speed applies to the normal operating speed of the shaft.

19.5.2 Number of Elements

If you know the number of rolling elements, check the box on the left to enable this field and enter the number of rolling elements contained in the bearing.


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19.5.3 Bearing Diameter (D)

If you know the bearing diameter, check the box on the left to enable this field and enter the pitch diameter of the bearing. Refer to Figure 19-5 for the definition of "pitch diameter".

19.5.4 Rolling Element Diameter (d)

If you know the rolling element diameter, check the box on the left to enable this field and enter the diameter of the rolling element in the bearing.

19.5.5 Contact Angle (α)

If you know the contact angle, check the box on the left to enable this field and enter the contact angle of the bearing. Refer to Figure 19-5 for the definition of "contact angle".

19.5.6 Estimation Factor

Use this field only if you do not accurately know the values of either of the diameters or contact angle. You must know the Shaft Speed and Number of Elements and enter these values in the appropriate fields. The definition of Estimation Factor is (d/D) cos (α).

NOTE

If you enable Estimation Factor, the software will ignore the entries for Bearing Diameter, Rolling Element

Diameter and Contact Angle.

19.6 Filter Configuration Tab This section describes the options that are available on the Filter Configuration tab.


186

Figure 19-6: REBAM Filter Configuration Screen

19.6.1 Filter Units

You can view the bearing frequencies and filter settings in either cycles per minute (cpm) or Hertz (Hz).

19.6.2 Bearing Frequencies

If you enabled the appropriate fields on the Bearing Configuration tab, the software will calculate the following frequencies that the bearing will generate when the shaft is running at its nominal operating speed:

• Fundamental Train Frequency (or Cage Frequency). This is the frequency at which the bearing cage and the rolling elements as a set complete 1 revolution.

• Element Spin Frequency. This is the frequency at which a rolling element spins 1 revolution about its own spin axis.

• Element Pass Frequency, Outer Race (BPFO). This is the frequency at which the rolling elements pass a specific point on the bearing's outer race.


187

• Element Pass Frequency, Inner Race (BPFI). This is the frequency at which the rolling elements pass a specific point on the bearing's inner race.

19.6.3 Filters

This section displays the current filter selections for the rotor, element pass and spike regions. You can adjust these values by changing the nominal values for each filter region. The “Orders Of” section displays the orders of magnitude relationship between a region's primary signal of interest and its "Nominal" filter corner frequency.

• Rotor Region Low Pass. This is the low-pass filter that the monitor will apply to the input signal for calculating the Rotor proportional value.

• Element High Pass Corner and Element Low Pass Corner. This is the bandpass filter that the monitor will apply to the input signal for calculating the Element proportional value.

• Spike High Pass. This is the high-pass filter that the monitor will apply to the input signal for calculating the Spike proportional value.

19.6.4 Stepping/Tracking Enabled

If you check this box, then the monitor will switch filter regions between the Nominal and the ±10% filters as the shaft speed changes by the appropriate amount. This feature requires a rotor speed signal.

19.7 Filter Summary Tab This section describes the information that is available on the Filter Summary tab. This screen (shown in Figure 19-7) summarizes the filters that the current configuration will implement. This information will be very useful when you wish to verify the operation of the monitor. You must manipulate the information on the previous screens in order to change the information displayed on this screen.


188

Figure 19-7: REBAM Filter Summary Screen

19.8 Alarm Setpoints This section lists the available setpoints for the REBAM channel. A setpoint is the level within the full-scale range that determines when an alarm occurs. The 3500 Monitoring System allows you to set Alert/Alarm 1 setpoints for every proportional value on each channel. The channel will drive an Alert/Alarm 1 indication if 1 or more of the channel proportional values exceeds its setpoints. The 3500 Monitoring System also allows you to set up to 4 Danger/Alarm 2 setpoints (2 over setpoints and 2 under setpoints) for up to 2 of the proportional values. You may select any 2 of the available proportional values for the channel.





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Use the Setpoint Configuration screen in the 3500 Rack Configuration Software (shown in Figure 19-8) to adjust Alert/Alarm 1 and Danger/Alarm 2 setpoints.

Figure 19-8: REBAM Setpoint Configuration Screen



190

Table 19-5 lists the Alert/Alarm 1 and Danger/Alarm 2 setpoints that are available for each REBAM channel pair. The Communication Gateway and Display Interface Modules use the setpoint number.


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Table 19-5: REBAM Available Setpoints

Setpoint Number Radial Vibration

1 Over Spike

2 Over Element

3 Under Element

4 Over Rotor

5 Over Direct

6 Over Gap

7 Under Gap

8 Over 1X Ampl

9 Under 1X Ampl

10 Over 1X Phase Lag







The alarming hysteresis for all channel configurations is 1/64th of Full Scale. When a channel exceeds an alarm setpoint, it must fall back below the setpoint less the hysteresis before it can go out of alarm.

Example:


Section 20 - REBAM Verification

193

20. REBAM Channel Verification 20.1 Introduction

The following sections describe how to test alarms, verify channels, and test OK limits for channels configured as REBAM channels. You verify the output values and alarm setpoints by varying the input vibration signal level (both peak to peak amplitude and dc voltage bias) and verifying that the Verification screen reports the correct results on the test computer.

20.2 Test Equipment and Software Setup You can use the following test equipment and software setup as the initial set up that all the REBAM channel verification procedures (Test Alarms, Verify Channels, and Test OK Limits) require.

DANGER

High voltage present. Contact with high voltages could cause shock, burns, or death. Do not touch exposed wires or

terminals.


1. Tests will exceed alarm setpoint levels and activate alarms. This could result in a relay contact state change.



Connect the power supply, function generator, Keyphasor multiplier/divider, and multimeter to COM and SIG of channel 1 with the polarity as shown in Figure 20-1 to simulate the transducer signal. Note that 1X Amplitude and Phase require the equipment shown inside the dashed lines.


194

10

1

2

3 45

9

6 7

8

1. Keyphasor signal 2. Keyphasor I/O module 3. 40 kΩ resistor 4. 100 µF capacitor 5. Keyphasor multiplier/divider 6. Typical I/O module 7. Simulated input signal 8. Function generator 9. Multimeter 10. Power supply

Figure 20-1: REBAM Channel Test Equipment


195

Set the test equipment as shown in Table 20-1.

Table 20-1: REBAM Channel Test Equipment Setup

Power Supply Function Generator Keyphasor Multiplier/Divider



Multiply Switch: 001 Divide Switch: 001




3. Choose the proper Slot number and Channel number.


NOTE

Timed OK Channel Defeat is enabled for REBAM channels. If a channel goes Not OK, the

monitor will defeat the channel for 15 to 270 seconds before the channel returns to the OK status. The time depends upon the configured

Shaft Speed and Rotor Region

20.3 Test Alarms The general procedure for testing alarm setpoints is to use a function generator to simulate the vibration and Keyphasor signals. You test the alarm levels by varying the vibration signal (both peak-to-peak amplitude and dc voltage bias) and verifying that the Verification screen reports the correct results on the test computer. You need test only those alarm parameters that are configured and being used. The general test procedure to verify current alarm operation will include simulating a transducer input signal and varying this signal:




196


When varying the signal from an alarm condition to a non-alarm condition, you must consider alarm hysteresis. Adjust the signal well below the alarm setpoint to clear the alarm.

20.3.1 Spike


2. Connect the test equipment and run the software as described in Section 20.2, ”Test Equipment and Software Setup”.

3. Set the Keyphasor multiplier/divider so that the multiply setting is 001 and the divide setting is 001.

4. Adjust the function generator frequency to approximately twice the Spike high-pass corner frequency.

5. Adjust the function generator amplitude below the Spike setpoint levels on the Spike bar graph display of the Verification screen.

6. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for Spike is green, and the Current Value field contains no alarm indication.

7. Adjust the function generator amplitude to just exceed the Spike Over Alert/Alarm 1 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for Spike changes from green to yellow and that the Current Value Field indicates an alarm.

8. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for Spike remains yellow and that the Current Value Field still indicates an alarm.

9. Adjust the function generator amplitude to just exceed the Spike Over Danger/Alarm 2 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for Spike changes from yellow to red and that the Current Value Field indicates an alarm.

10. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for Spike remains red and that the Current Value Field still indicates an alarm.

11. Adjust the function generator amplitude below the Over Alarm setpoint levels. If the non-latching option is configured, verify that the color of the bar graph indicator for Spike changes to green and that the Current Value Box contains no indication of alarms. Press the RESET switch on the RIM to reset latching alarms.


197




20.3.2 Element




4. Adjust the function generator frequency to approximately the midpoint between the high-pass and low-pass corners of the bandpass filter.

5. Adjust the function generator amplitude between the Element Over and Under setpoint levels on the Element bar graph display of the Verification screen.

6. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for Element is green, and the Current Value field contains no alarm indication.

7. Adjust the function generator amplitude to just exceed the Element Over Alert/Alarm 1 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for Element changes from green to yellow and that the Current Value Field indicates an alarm.

8. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for Element remains yellow and that the Current Value Field still indicates an alarm.

9. Adjust the function generator amplitude to just exceed the Element Over Danger/Alarm 2 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for Element changes from yellow to red and that the Current Value Field indicates an alarm.

10. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for Element remains red and that the Current Value Field still indicates an alarm.


198

11. Adjust the function generator amplitude below the Over Alarm setpoint levels. If the non-latching option is configured, verify that the color of the bar graph indicator for Element changes to green and that the Current Value Box contains no indication of alarms. Press the RESET switch on the RIM to reset latching alarms.

12. If applicable, perform similar tasks to test the under setpoints.




20.3.3 Rotor




4. Adjust the function generator frequency to approximately one-half the corner frequency of the Rotor Low-pass Filter.

5. Adjust the function generator amplitude below the Rotor setpoint levels on the Rotor bar graph display of the Verification screen.

6. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for Rotor is green, and the Current Value field contains no alarm indication.

7. Adjust the function generator amplitude to just exceed the Rotor Over Alert/Alarm 1 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for Rotor changes from green to yellow and that the Current Value Field indicates an alarm.

8. Press the RESET switch on the RIM. Verify that the color of the bar graph indicator for Rotor remains yellow and that the Current Value Field still indicates an alarm.

9. Adjust the function generator amplitude to just exceed the Rotor Over Danger/Alarm 2 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for Rotor


199

changes from yellow to red and that the Current Value Field indicates an alarm.


11. Adjust the function generator amplitude below the Over Alarm setpoint levels. If the non-latching option is configured, verify that the color of the bar graph indicator for Rotor changes to green and that the Current Value Box contains no indication of alarms. Press the RESET switch on the RIM to reset latching alarms.




20.3.4 Direct




4. Adjust the function generator amplitude below the Direct setpoint levels on the Direct bar graph display of the Verification screen.

5. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for Direct is green, and the Current Value field contains no alarm indication.

6. Adjust the function generator amplitude to just exceed the Direct Over Alert/Alarm 1 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for Direct changes from green to yellow and that the Current Value Field indicates an alarm.



200

8. Adjust the function generator amplitude to just exceed the Direct Over Danger/Alarm 2 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for Direct changes from yellow to red and that the Current Value Field indicates an alarm.


10. Adjust the function generator amplitude below the Over Alarm setpoint levels. If the non-latching option is configured, verify that the color of the bar graph indicator for Direct changes to green and that the Current Value Box contains no indication of alarms. Press the RESET switch on the RIM to reset latching alarms.




20.3.5 Gap



3. Adjust the power supply votlage within the Gap setpoint levels on the Gap bar graph display of the Verification screen.


5. Adjust the power supply voltage to just exceed the Gap Over Alert/Alarm 1 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for Gap changes from green to yellow and that the Current Value Field indicates an alarm.



201









NOTE







202


5. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for 1X Ampl is green, and the Current Value field contains no alarm indication.

6. Adjust the function generator amplitude to just exceed the 1X Ampl Over Alert/Alarm 1 setpoint level. Wait for 2 to 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for 1X Ampl changes from green to yellow and that the Current Value Field indicates an alarm.


8. Adjust the function generator amplitude to just exceed the 1X Ampl Over Danger/Alarm 2 setpoint level. Wait for 2 to 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for 1X Ampl changes from yellow to red and that the Current Value Field indicates an alarm.








203

20.3.7 1X Phase



NOTE


activate the Over and Under phase alarms. You must download the setpoints to the



4. Adjust the phase reading within the 1X Phase setpoint levels on the 1X Phase bar graph display of the Verification screen. The 1X Amplitude must be at least 42.7 mV to get a valid 1X Phase reading.

5. Press the RESET switch on the Rack Interface Module (RIM). Verify that the OK LED is on, the color of the bar graph indicator for 1X Phase is green, and the Current Value field contains no alarm indication.

6. Adjust the phase reading to just exceed the 1X Phase Over Alert/Alarm 1 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for 1X Phase changes from green to yellow and that the Current Value Field indicates an alarm.


8. Adjust the phase reading to just exceed the 1X Phase Over Danger/Alarm 2 setpoint level. Wait for 2 or 3 seconds after the alarm time delay expires and verify that the color of the bar graph indicator for 1X Phase changes from yellow to red and that the Current Value Field indicates an alarm.



204






20.4 Verify Channel Values The general procedure for testing channel values is to use a function generator to simulate the vibration and Keyphasor input signals. You verify the output values by varying the input vibration signal level (both peak-to-peak amplitude and dc voltage bias) and verifying that the Verification screen reports the correct results on the test computer.

NOTE

These parameters have an accuracy specification of ±1% of full scale for

amplitude and ±3° for phase.

20.4.1 Spike



3. Adjust the function generator frequency to approximately twice the corner frequency of the Spike High-pass Filter.


205





Full Scale Voltage = Spike Meter Top Scale × Transducer Scale Factor

Example 1:

Spike Meter Top Scale = 500 µin pk-pk

= 0.500 mil pk-pk


Full Scale = (0.500 mil pk-pk × 1.0 V/mil)

= 0.500 Vpk-pk

For Vrms input:


= (0.707/2) × (0.500 Vpk-pk)

= 0.177 Vrms

Example 2:

Spike Meter Top Scale = 10 µm pk-pk

Transducer Scale Factor = 80 mV/um

= 0.080 V/µm

Full Scale = (10 µm pk-pk × 0.080 V/µm)

= 0.800 Vpk-pk

For Vrms input: Vrms = (0.707/2) × (Vpk-pk) for a sine wave input = (0.707/2) × (0.800 Vpk-pk) = 0.283 Vrms


206

5. Set the Keyphasor multiplier/divider so that the multiply setting is 001 and the divide setting is 001. Verify that the Spike bar graph display and Current Value Box are reading ±1% of full scale.




20.4.2 Element



3. Adjust the function generator frequency to the center frequency of the Element bandpass filter. To determine the center frequency, calculate the square root of the product of the high-pass corner frequency and the low-pass corner frequency:

Center frequency = LPF x HPF

where HPF = high-pass corner frequency, LPF = low-pass corner frequency.





Full Scale Voltage = Element Meter Top Scale × Transducer Scale Factor

Example 1:

Element Meter Top Scale = 500 µin pk-pk


207

= 0.500 mil pk-pk



= 0.500 Vpk-pk

For Vrms input:


= (0.707/2) × (0.500 Vpk-pk)

= 0.177 Vrms

Example 2:

Element Meter Top Scale = 10 µm pk-pk

Transducer Scale Factor = 80 mV/µm

= 0.080 V/µm


= 0.800 Vpk-pk

For Vrms input:


= (0.707/2) × (0.800 Vpk-pk)

= 0.283 Vrms

5. Set the Keyphasor multiplier/divider so that the multiply setting is 001 and the divide setting is 001. Verify that the Element bar graph display and Current Value Box are reading ±1% of full scale.




20.4.3 Rotor



208


3. Adjust the function generator frequency to approximately one-half the corner frequency of the Rotor low-pass filter.





Full Scale Voltage = Rotor Meter Top Scale × Transducer Scale Factor

Example 1:

Rotor Meter Top Scale = 500 µin pk-pk

= 0.500 mil pk-pk



= 0.500 Vpk-pk

For Vrms input:


= (0.707/2) × (0.500 Vpk-pk)

= 0.177 Vrms

Example 2:

Rotor Meter Top Scale = 10 µm pk-pk


= 0.080 V/µm


= 0.800 Vpk-pk


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For Vrms input:


= (0.707/2) × (0.800 Vpk-pk)

= 0.283 Vrms

5. Set the Keyphasor multiplier/divider so that the multiply setting is 001 and the divide setting is 001. Verify that the Rotor bar graph display and Current Value Box are reading ±1% of full scale.




20.4.4 Direct







Full Scale Voltage = Direct Meter Top Scale × Transducer Scale Factor

Example 1:

Direct Meter Top Scale = 500 µin pk-pk

=0.500 mil pk-pk


210



= 0.500 Vpk-pk

For Vrms input:


= (0.707/2) × (0.500 Vpk-pk)

= 0.177 Vrms

Example 2:

Direct Meter Top Scale = 10 µm pk-pk


= 0.080 V/µm


= 0.800 Vpk-pk

For Vrms input:


= (0.707/2) × (0.800 Vpk-pk)

= 0.283 Vrms

4. Set the Keyphasor multiplier/divider so that the multiply setting is 001 and the divide setting is 001. Verify that the Direct bar graph display and Current Value Box are reading ±1% of full scale.




20.4.5 Gap



211


3. Adjust the power supply voltage to -18.00 Vdc on the Gap bar graph display. Verify that the Gap bar graph display and Current Value Box are reading ±1% of -18.00 Vdc.

4. Adjust the power supply voltage to mid-scale on the Gap bar graph display. Verify that the Gap bar graph display and Current Value Box are reading ±1% of the mid-scale value.





NOTE










212

Full Scale Voltage = 1X Ampl Meter Top Scale × Transducer Scale Factor

Example 1:

1X Ampl Meter Top Scale = 500 µin pk-pk

= 0.500 mil pk-pk


= 1.000 V/mil


= 0.500 Vpk-pk

For Vrms input:


= (0.707/2) × (0.500 Vpk-pk)

= 0.177 Vrms

Example 2:

1X Ampl Meter Top Scale = 10 µm pk-pk


= 0.080 V/µm


= 0.800 Vpk-pk

For Vrms input:


= (0.707/2) × (0.800 Vpk-pk)

= 0.283 Vrms

4. Set the Keyphasor multiplier/divider so that the multiply setting is 001 and the divide setting is 001. Verify that the 1X Ampl bar graph display and Current Value Box are reading ±1% of full scale.


6. Disconnect the test equipment and reconnect the field wiring to the PWR, COM, and SIG channel terminals on the I/O module. Verify that the OK LED


213

comes on and that the OK relay energizes. Press the RESET switch on the Rack Interface Module (RIM) to reset the OK LED.


20.4.7 1X Phase

If your test equipment cannot change the phase output to a known value, use the test procedure in Section 20.4.7.1, “If Your Test Equipment Cannot Change the Phase Output (1X Phase)”. If your test equipment can change the phase output to a known value, use the procedure in Section 20.4.7.2, “If Your Test Equipment Can Change the Phase Output (1X Phase)”.

20.4.7.1 If Your Test Equipment Cannot Change the Phase Output (1X Phase)




4. Attach one channel of a 2-channel oscilloscope to the vibration signal buffered output and attach the other channel to the associated Keyphasor signal buffered output to observe both signals simultaneously.

5. Measure the phase. Measure 1X Phase from the leading edge of the Keyphasor pulse to the first positive peak of the vibration signal. Refer to Figure 20-2, which illustrates a phase lag of 45°. Verify that the 1X Phase bar graph display and Current Value Box read approximately what you measured above.


214

1. 1X vibration signal 2. Keyphasor signal 3. Time

4. 0° 5. One cycle

6. 360°

7. Phase lag = 45°

Figure 20-2: 1X Signal (1 Cycle of Vibration Signal Per Shaft Revolution)



20.4.7.2 If Your Test Equipment Can Change the Phase Output (1X Phase)

If your test equipment can change the phase output to a known value, use the following procedure.




4. Adjust the phase for mid-scale. Verify that the 1X Phase bar graph display and Current Value Box are reading ±1.5% of mid-scale.


215

5. If the reading does not meet specifications, verify that the input signal is correct. If the monitor still does not meet specifications or fails any other part of this test, go to Section 5.6, “If a Channel Fails a Verification Test”.



20.5 Test OK Limits The general approach for testing OK limits is to input a dc voltage and adjust it above the Upper OK Limit and below the Lower OK Limit. This will cause a channel Not OK condition and the OK Relay to change state (de-energize). The Verification screen displays the Upper and Lower OK Limits on the test computer.

1. Disconnect the field wiring PWR, COM, and SIG channel terminals on the I/O module.





6. Verify that the OK relay on the Rack Interface I/O Module indicates OK (is energized). Refer to the 3500/20 Rack Interface Module Operation and Maintenance Manual (part number 129768-01).

7. Increase the power supply voltage (more negative) until the OK LED just goes off (upper limit). Verify that the Channel OK State line in the Channel Status box reads Not OK and that the OK Relay indicates Not OK. Verify that the Upper OK Limit voltage on the Verification screen is equal to or more positive than the input voltage.



10. Gradually decrease the power supply voltage (less negative) until the OK LED just goes off (lower limit). Verify that the Channel OK State line


216

in the Channel Status box reads Not OK and that the OK Relay indicates Not OK. Verify that the Lower OK Limit voltage on the Verification screen is equal to or more negative than the input voltage.




14. Disconnect the test equipment and reconnect the field wiring to the PWR, COM, and SIG channel terminals on the Monitor I/O Module. Press the RESET switch on the Rack Interface Module (RIM) and verify that the OK LED comes on and that the OK relay energizes.


16. Return the bypass switches for all configured channels back to their original settings.

Table 20-2: REBAM Channel Default OK Limits Table (Assume ±50 mV accuracy for check tolerance)


3300 MicroProx, 40 mV/µm, with or without barriers -0.95 to -1.05 -16.95 to –17.05

3300 MicroProx, 80 mV/µm, with or without barriers -0.95 to -1.05 -16.95 to –17.05

7200 MicroProx, 80 mV/µm, with or without barriers -2.95 to -3.05 -18.95 to -19.05

Section 21 - Specifications

217

21. Specifications 21.1 Inputs

21.1.1 Signal Accepts from 1 to 4 proximity transducer signals.

21.1.2 Input Impedance

0 to 24 V Maximum

10 kΩ for Proximitor and acceleration sensor inputs.

TMR I/O

The effective impedance of 3 Bussed TMR I/O channels wired in parallel to 1 transducer is 50 kΩ.

21.1.3 Power Consumption 7 watts, typical.

21.1.4 Sensitivity

Radial Vibration

3.94 mV/µm (100 mV/mil) 7.87 mV/µm (200 mV/mil)

Thrust


Eccentricity


Differential Expansion


REBAM Channel 1000 mV/mil (40 mV/um) 2000 mV/mil (80 mV/um).


218

21.2 Outputs

21.2.1 Front Panel LEDs

OK LED

Indicates when the 3500/42M is operating properly.

TX/RX LED

Indicates when the 3500/42M is communicating with other modules in the 3500 rack.

Bypass LED

Indicates when the 3500/42M is in Bypass Mode.

21.2.2 Buffered Transducer Outputs

Connectors

The front of each monitor has 1 coaxial connector for each channel. Each connector is short-circuit protected.

Output Impedance

550 Ω.

21.2.3 Transducer Power Supply -24 Vdc.

21.3 Signal Conditioning All specifications are at +25 °C (+77 °F) unless noted otherwise.

21.3.1 Radial Vibration

Frequency Response

Direct Filter User-programmable, 4 Hz to 4000 Hz or 1 Hz to 600 Hz.

Gap Filter -3 dB at 0.09 Hz.

Not 1X Filter 60 cpm to 15.8 times running speed. Constant Q notch filter. Minimum rejection in stopband of -34.9 dB.


219

Smax 0.125 to 15.8 times running speed.

1X & 2X Vector Filter Constant Q Filter. Minimum rejection in stopband of -57.7 dB.

NOTE

1X & 2X Vector, Not 1X, and Smax parameters are valid for machine speeds of 60 cpm to 60,000 cpm.

Accuracy

Direct and Gap Within ± 0.33% of full scale typical, ±1% maximum.

1X and 2X Within ±0.33% of full-scale typical, ±1% maximum.

Smax Within ±5% maximum.

Not 1X ±3% for machine speeds less than 30,000 cpm. ±8.5% for machine speeds greater than 30,000 cpm.

21.3.2 Thrust and Differential Expansion

Frequency Response

Direct Filter -3 dB at 1.2 Hz.


Accuracy

Typical Within ± 0.33% of full-scale.

Maximum Within ± 1% of full-scale.


220

21.3.3 Eccentricity

Frequency Response

Direct Filter -3 dB at 15.6 Hz.


Accuracy

Typical Within ± 0.33% of full-scale.

Maximum Within ± 1% of full-scale.

21.3.4 REBAM Channel

Frequency Response

Spike User-programmable 0.152 to 8678 Hz high-pass filter.

Element User-programmable bandpass filter for BPFO ranging from 0.139 to 3836 Hz.

High-pass Corner 0.8 x BPFO.

Lowpass corner 2.2 x BPFO.

Rotor User-programmable 0.107 to 2221 Hz low-pass filter.

Direct Programmable 3.906 to 14.2 Hz high-pass filter. Spike and Rotor filters determine filter selection.

Gap Programmable 0.002 to 1.0 Hz low-pass filter. Rotor filter determines filter selection.

1X Vector Filter Constant Q Filter. The range of shaft speeds for which the value is valid depends on the nominal Shaft Speed for which the channel is configured. Table 21-1 summarizes the relationship:


221

Table 21-1: 1X Vector Filter Valid Speed Ranges

Nominal Shaft Speed (Hz) Valid Speed Range (Hz)

10 to <126 0.071 to 160

126 to <252 0.133 to 330

252 to <504 0.25 to 660

504 to <584 0.50 to 750

Note for Table 21-1: If a multi-event or speed gear generates the speed input, the resultant input signal has an upper limitation of approximately 20 KHz.

Filter Quality

Spike High Pass 6-pole Elliptic (155 dB per decade, minimum). Corner frequency is -0.1 dB.

Element Band Pass 8-pole Butterworth (155 dB per decade minimum). Corner frequency is -3 dB.

Rotor Low Pass 6-pole Elliptic (155 dB per decade, minimum). Corner frequency is -0.1 dB.

Rotor, Direct High Pass

1-pole Butterworth (18 dB per decade, minimum). Corner frequency is -3 dB.

Spike, Direct Low Pass

Corner is -0.3 dB maximum.

Gap Low Pass 1-pole Butterworth (18 dB per decade, minimum). Corner frequency is -3 dB.

1X Amplitude Constant Q of 16.67. Stopband frequencies are 0.91 and 1.09 times the running speed. Stopband attenuation is -51 dB minimum.


222

Accuracy

Amplitudes

Typical Within ±0.33% of full scale when input signal is at the center frequency of the proportional value's passband.

Maximum Within ±1% of full scale maximum when input signal is at the center frequency of the proportional value's passband.

Phase 3° error, maximum.

Channels Enabled

Certain configurations, generally those for higher speed machines, will allow you to enable only 1 channel of a channel pair to be enabled. show, for both 1-channel and 2-channel configurations, the approximate maximum shaft speed for the Spike, Element and Rotor filters for a bearing with a given number of rolling elements. The graphs assume that the rotor low pass filter corner is at 3.2X the shaft speed and the spike highpass filter corner is at 4X the element pass frequency for the outer race (BPFO).


223

1-Channel Configuration

0

5000

10000

15000

20000

25000

30000

35000

40000

6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40

Num ber of Elem ents

Max

RP

M

Rotor Element Pass Spike

Figure 21-1: Maximum Shaft Speeds Rotor, Element Pass, and Spike Filters

(Single-Channel Configuration)


224

2-Channel Configuration

0

5000

10000

15000

20000

25000

6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40

Num ber of Elem ents

Max

RP

M

Rotor Element Pass Spike

Figure 21-2: Maximum Shaft Speeds for Rotor, Element Pass, and Spike Filters

(2-Channel Configuration)

Filter Tracking/Stepping

This feature requires a valid speed signal input. The following summarizes how the tracking feature works:

Initial Condition Nominal filter set used.

Switch from Nominal to Lower Filter Set

Current shaft speed ≤ (0.9 x Nominal Shaft Speed).

Switch from Lower to Nominal Filter Set

Current shaft speed ≥ (0.95 x Nominal Shaft Speed).


225

Switch from Nominal to Higher Filter Set

Current shaft speed ≥ (1.1 x Nominal Shaft Speed).

Switch from Higher to Nominal Filter Set

Current shaft speed ≤ (1.05 x Nominal Shaft Speed).

Shaft Speed Error Condition

Nominal filter set used.

21.4 Alarms Alarm Setpoints

You can set Alert levels for each value measured by the monitor. In addition, you can set Danger setpoints for any 2 of the values that the monitor measures. You use software configuration to set all alarm setpoints. You can adjust alarms can normally set them from 0 to 100% of full-scale for each measured value. The exception is that when the full-scale range exceeds the range of the transducer the software will limit the setpoint to the range of the transducer. Accuracy of alarms are to within 0.13% of the desired value.

Alarm Time Delays

You can use software to program Alarm delays and set them as follows.

Radial Vibration

Alert From 1 to 60 seconds in 1-second increments.

Danger 0.1 seconds, or from 1 to 60 seconds in 0.5-second increments.

REBAM Channel

Alert From (calculated minimum value) to 400 seconds in 1-second increments.

Danger From (calculated minimum value) to 400 seconds in 0.5-second increments.


226

21.5 Static Values Static values are measurements used to monitor the machine. The Proximitor Seismic Monitor provides the following static values

Radial Vibration

• Direct • Gap • 1X Amplitude • 1X Phase Lag • 2X Amplitude • 2X Phase Lag • Not 1X Amplitude • Smax Amplitude

Thrust Position

• Direct • Gap.

Differential Expansion

• Direct • Gap.

Eccentricity

• Peak-to-peak • Gap • Direct Minimum • Direct Maximum.

REBAM Channel

• Spike • Element • Rotor • Direct • Gap • 1X Amplitude • 1X Phase Lag

21.6 Proximitor Sensor Barrier Parameters The following specifications apply for both CSA-NRTL/C and CENELEC approvals.


227

Circuit Parameters

Vmax (PWR) 26.80 V

(SIG) 14.05 V

Imax (PWR) 112.8 mA

(SIG) 2.82 mA

Rmin (PWR) 237.6 Ω

(SIG) 4985 Ω

Channel Parameters (Entity)

Vmax 28.0 V

Imax 115.62 mA

Rmin (PWR) 237.6 Ω

(SIG) 4985 Ω

21.7 Environmental Limits Operating Temperature

Used With Internal/External Termination Proximitor I/O Module

-30 °C to +65 °C (-22 °F to +150 °F)

Used With Proximitor Internal Barrier I/O Module (Internal Termination)

0 °C to +65 °C (32 °F to +150 °F)


228

Storage Temperature

-40 °C to +85 °C (-40 °F to +185 °F).

Humidity

95%, noncondensing.

21.8 CE Mark Directives

21.8.1 EMC Directives

Certificate of Conformity

136669

EN50081-2

Radiated Emissions EN 55011, Class A

Conducted Emissions

EN 55011, Class A

EN50082-2

Electrostatic Discharge

EN 61000-4-2, Criteria B

Radiated Susceptibility

ENV 50140, Criteria A

Conducted Susceptibility

ENV 50141, Criteria A

Electrical Fast Transient

EN 61000-4-4, Criteria B

Surge Capability EN 61000-4-5, Criteria B

Magnetic Field EN 61000-4-8, Criteria A

Power Supply Dip EN 61000-4-11, Criteria A


229

Radio Telephone ENV 50204, Criteria A

21.8.2 CE Mark Low Voltage Directives Certificate of Conformity

134036

Safety Requirements

EN 61010-1

21.9 Hazardous Areas Approval (CSA/NRTL/C) When used with Internal/External Termination I/O Module

Class I, Division 2, Groups A through D, T4 @ Ta=65°.

Certification Number

BN26744C-18

When used with Internal Barrier I/O Module

Refer to specification sheet 141495-01 for approvals information.

21.10 Physical Monitor Module

Dimensions (Height x Width x Depth)

241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in).

Weight 0.91 kg (2.0 lbm)

I/O Modules (Non-barrier)




230


I/O Modules (Barrier)




Rack Space Requirements

Monitor Module 1 full-height front slot

I/O Modules 1 full-height rear slot

Section 22 - Ordering Information

231

22. Ordering Information 22.1 Ordering Considerations

22.1.1 General

The 3500/40M Module requires the following (or later) firmware and software revisions:

• 3500/01 Software – Version 2.50



You cannot use external termination blocks with internal termination I/O modules.

When ordering I/O modules with external terminations, you must order the external termination blocks and cables separately.

You must use bussed external termination blocks only with TMR I/O modules.

22.1.2 Internal Barrier I/O Module

You should consult the 3500 Internal Barrier specification sheet (part number 141495-01) if you select the Internal Barrier Option is selected.

22.1.3 REBAM Channel

The REBAM Channel Type requires the following (or later) firmware and software revisions:

• 3500/40M Module Firmware – Revision 2.10




• DM2000 Software - Version 3.40

The REBAM channel type also requires M version (or later) of the 3500 Proximitor Monitor.


232

22.2 List of Options and Part Numbers

22.2.1 Proximitor Seismic Monitor 3500/40-AXX-BXX A: I/O Module Type

0 1 Proximitor I/O Module with Internal Terminations

0 2 Proximitor I/O Module with External Terminations

0 3 TMR Proximitor I/O Module with Internal Barriers.

0 4 TMR Proximitor I/O Module with External Terminations

B: Agency Approval Option

0 0 None

0 1 CSA/NRTL/C

22.2.2 3500 Transducer (XDCR) Signal to External Termination (ET) Block Cable

129525 -AXXXX-BXX A: Cable Length

0 0 0 5 5 feet (1.5 metres)

0 0 0 7 7 feet (2.1 metres)

0 0 1 0 10 feet (3 metres)

0 0 2 5 25 feet (7.5 metres)

0 0 5 0 50 feet (15 metres)

0 1 0 0 100 feet (30.5 metres)

B: Assembly Instructions

0 1 Not assembled

0 2 Assembled

22.2.3 External Termination Blocks

125808-01

Proximitor External Termination Block. Euro Style connectors.

128015-01

Proximitor External Termination Block. Terminal strip connectors.

132242-01

Prox/Seismic Bussed TMR External Termination Block. Euro Style connectors.

Section 22 - Ordering Information

233

132234-01

Prox Seismic Bussed TMR External Termination Block. Terminal strip connectors.

22.2.4 Spares

140734-02

3500/42M Proximitor/Seismic Monitor.

125680-01

Proximitor I/O Module with Internal Terminations.

126615-01

Proximitor I/O Module with External Terminations.

149716-01

TMR Proximitor I/O Module with External Terminations.

143488-01

3500/40M Proximitor Monitor Module Opertion and Maintenance Manual.

135489-04

I/O Module with Internal Barriers (Internal Terminations).

00580434

Internal Termination I/O Module 8-pin Connector Header, Euro Style. Used on I/O module 125680-01.

00502133

Internal Barrier I/O Module 12-pin Connector Header, Euro Style.

3488c1

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